ASTROSAT CZTI

Data Quality Report

Orbit 35839

Creation date: 2022-06-08T16:46:13.704608
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/AS1A11_080T01_9000005146_35839cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35839cztM0_level2_quad_clean.evt
Size (bytes)915,724,800120,689,280
Size873.3 MB 115.1 MB
Events in quadrant A8,971,601750,585
Events in quadrant B5,142,846784,436
Events in quadrant C5,721,160746,664
Events in quadrant D7,254,809712,752

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01920
B01920
C01920
D01920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0327333
B0209642
C0226952
D0277522

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9532134114.068401%
B9532430.451112%
C95322362.475871%
D95324304.511120%

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 13238 9534 1275 1275 9.63% 13.37%
B 13238 9534 16 16 0.12% 0.17%
C 13238 9534 219 219 1.65% 2.30%
D 13238 9534 433 433 3.27% 4.54%

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 7 48 2402773 10418.87 1149 1132 230.5
A 15 169 1901042 8242.24 1149 1132 230.5
A 10 83 213012 919.18 1149 1132 230.5
B 5 172 154203 685.23 1180 1155 223.4
B 4 232 136143 604.38 1180 1155 223.4
B 15 201 76234 336.15 1180 1155 223.4
C 15 208 540173 2069.61 1131 1142 260.5
C 15 214 391310 1498.05 1131 1142 260.5
C 0 10 313983 1201.15 1131 1142 260.5
D 7 223 1481022 5321.08 1143 1112 278.1
D 13 249 510494 1831.5 1143 1112 278.1
D 2 250 283669 1015.95 1143 1112 278.1

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