ASTROSAT CZTI

Data Quality Report

Orbit 50756

Creation date: 2025-02-15T03:05:56.506405
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/AS1C07_001T01_9000006450_50756cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50756cztM0_level2_quad_clean.evt
Size (bytes)596,387,52087,163,200
Size568.8 MB 83.1 MB
Events in quadrant A4,568,375586,333
Events in quadrant B3,813,647636,510
Events in quadrant C4,444,963561,465
Events in quadrant D8,769,092422,187

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01262
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018087219
B015759120
C017737120
D030685329

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61941913.083629%
B62062413.883339%
C62032984.804127%
D6193161326.045535%

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 7277 6212 122 122 1.68% 1.96%
B 7288 6220 140 140 1.92% 2.25%
C 7295 6219 228 228 3.13% 3.67%
D 7282 6205 1619 1619 22.23% 26.09%

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 4 4 563101 3452.37 653 636 162.9
A 9 96 285285 1747.16 653 636 162.9
A 14 254 262303 1606.09 653 636 162.9
B 4 206 394761 2833.8 653 632 139.1
B 10 247 176996 1268.06 653 632 139.1
B 2 176 137834 986.49 653 632 139.1
C 10 171 525560 2984.76 642 637 175.9
C 5 10 439457 2495.17 642 637 175.9
C 9 38 294177 1669.1 642 637 175.9
D 8 176 2594103 16569.64 562 541 156.5
D 15 93 657934 4199.92 562 541 156.5
D 8 48 645367 4119.64 562 541 156.5

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