ASTROSAT CZTI

Data Quality Report

Orbit 53490

Creation date: 2025-08-18T11:08:25.378673
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/AS1A14_002T07_9000006498_53490cztM0_level2.fits modeM0/AS1A14_002T07_9000006498_53490cztM0_level2_quad_clean.evt
Size (bytes)1,271,056,32075,945,600
Size1.2 GB 72.4 MB
Events in quadrant A12,040,026509,085
Events in quadrant B12,811,369461,242
Events in quadrant C17,855,366145,103
Events in quadrant D3,757,555654,291

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410680
B0432570
C0583090
D0167420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7607276936.400684%
B7607358747.153937%
C7608621881.729758%
D7608440.578339%

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 7606 7606 2644 2644 34.76% 34.76%
B 7607 7607 3191 3191 41.95% 41.95%
C 7607 7607 6266 6266 82.37% 82.37%
D 7608 7608 53 53 0.70% 0.70%

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 3 63 4914248 27617.51 716 699 177.9
A 3 62 3068819 17244.93 716 699 177.9
A 15 174 701391 3938.37 716 699 177.9
B 2 249 6374984 44933.49 664 641 141.9
B 10 254 3140551 22133.59 664 641 141.9
B 4 171 173821 1220.77 664 641 141.9
C 7 64 12830203 123446.74 376 373 103.9
C 15 224 1706253 16413.73 376 373 103.9
C 1 241 903349 8688.3 376 373 103.9
D 1 0 185419 824.51 794 759 224.0
D 3 12 97633 432.54 794 759 224.0
D 7 70 76092 336.36 794 759 224.0

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