ASTROSAT CZTI

Data Quality Report

Orbit 20200515_T03_206T01_9000003672_level2

Creation date: 2021-08-31T00:19:37.316414
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1T03_206T01_9000003672cztM0_level2_bc.evt modeM0/AS1T03_206T01_9000003672cztM0_level2_quad_clean.evt
Size (bytes)15,684,877,4404,321,074,240
Size14.6 GB 4.0 GB
Events in quadrant A75,256,91527,731,916
Events in quadrant B80,812,18728,196,473
Events in quadrant C103,195,01426,342,563
Events in quadrant D192,201,05424,868,840

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05700
B05710
C05710
D05710

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070480
B070480
C070480
D070480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07233110
B07466970
C08199150
D011256040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A34669545121.301432%
B34669658931.699760%
C346694156594.516663%
D346694232436.704183%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 412592 346684 118 118 0.03% 0.03%
B 412592 346680 167 167 0.04% 0.05%
C 412592 346696 3575 3575 0.87% 1.03%
D 412592 346664 4050 4050 0.98% 1.17%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 17 912735 222.15 18725 18408 4025.8
A 11 208 569599 136.91 18725 18408 4025.8
A 13 254 554288 133.11 18725 18408 4025.8
B 0 190 1422418 398.72 18986 18529 3521.0
B 5 172 1389592 389.4 18986 18529 3521.0
B 0 229 1157657 323.53 18986 18529 3521.0
C 7 247 31848245 7659.64 17772 17721 4155.6
C 3 233 877975 207.01 17772 17721 4155.6
C 0 239 860666 202.84 17772 17721 4155.6
D 8 195 45466901 10921.73 17805 17180 4161.4
D 1 52 22430835 5386.08 17805 17180 4161.4
D 9 35 13385138 3212.37 17805 17180 4161.4

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter