ASTROSAT CZTI

Data Quality Report

Orbit 03786

Creation date: 2024-06-27T14:33:38.402956
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/AS1G05_248T01_9000000486_03786cztM0_level2.evt modeM0/AS1G05_248T01_9000000486_03786cztM0_level2_quad_clean.evt
Size (bytes)905,379,840138,464,640
Size863.4 MB 132.1 MB
Events in quadrant A6,910,067849,419
Events in quadrant B6,841,943847,273
Events in quadrant C6,323,088826,436
Events in quadrant D6,507,514814,923

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02520
B02520
C02520
D02520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0292022
B0288912
C0275842
D0282132

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A123662882.328967%
B123661190.962316%
C123663082.490700%
D123661901.536471%

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 13566 12368 174 174 1.28% 1.41%
B 13566 12369 52 52 0.38% 0.42%
C 13566 12369 250 250 1.84% 2.02%
D 13566 12369 178 178 1.31% 1.44%

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 13 251 812279 2864.31 1380 1346 283.1
A 0 50 440907 1552.58 1380 1346 283.1
A 0 118 250650 880.57 1380 1346 283.1
B 15 204 855256 3135.08 1410 1375 272.4
B 5 200 256157 935.45 1410 1375 272.4
B 4 81 79148 285.55 1410 1375 272.4
C 2 53 1001258 3187.27 1343 1346 313.7
C 1 16 47537 147.24 1343 1346 313.7
C 10 65 22430 67.21 1343 1346 313.7
D 8 112 480980 1465.19 1350 1308 327.4
D 1 84 164266 497.77 1350 1308 327.4
D 2 232 136989 414.45 1350 1308 327.4

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
Veto Counter