ASTROSAT CZTI

Data Quality Report

Orbit 20190603_A05_064T01_9000002964_level2

Creation date: 2019-06-07T13:02:35.163494
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A05_064T01_9000002964cztM0_level2_bc.evt modeM0/AS1A05_064T01_9000002964cztM0_level2_quad_clean.evt
Size (bytes)7,574,322,2402,078,055,360
Size7.1 GB 1.9 GB
Events in quadrant A27,607,47914,341,254
Events in quadrant B39,207,81114,415,044
Events in quadrant C48,753,25413,825,366
Events in quadrant D104,992,19311,448,052

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02710980
B03118360
C03738110
D05628700

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A026540
B026540
C026540
D026540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02030
B02030
C02030
D02030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12988712150.935428%
B12988722291.716107%
C12988794477.273245%
D1298873467626.697052%

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 150447 129878 18 18 0.01% 0.01%
B 150447 129870 62 62 0.04% 0.05%
C 150447 129867 121 121 0.08% 0.09%
D 150447 129845 8266 8266 5.49% 6.37%

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 14 238 1010187 684.1 6725 6607 1467.0
A 5 16 464851 312.37 6725 6607 1467.0
A 10 253 93037 58.92 6725 6607 1467.0
B 3 112 7963765 6254.17 6778 6620 1272.3
B 7 220 1487584 1164.01 6778 6620 1272.3
B 0 197 652307 507.5 6778 6620 1272.3
C 9 221 16795570 10840.68 6466 6444 1548.7
C 4 254 4466953 2880.14 6466 6444 1548.7
C 3 233 1827198 1175.65 6466 6444 1548.7
D 2 184 39190642 28281.83 5812 5609 1385.5
D 7 38 21346997 15403.16 5812 5609 1385.5
D 1 52 6051943 4363.95 5812 5609 1385.5

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