ASTROSAT CZTI

Data Quality Report

Orbit 53760

Creation date: 2025-09-05T10:30:14.791693
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_022T04_9000006506_53760cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53760cztM0_level2_quad_clean.evt
Size (bytes)1,023,235,20062,795,520
Size975.8 MB 59.9 MB
Events in quadrant A16,300,6558,293
Events in quadrant B3,138,564665,799
Events in quadrant C12,671,482267,485
Events in quadrant D5,276,425517,472

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0528271
B0138661
C0418241
D0201661

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6333627599.084162%
B63331492.352755%
C6333385660.887415%
D633369110.911101%

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 7458 6332 6073 6073 81.43% 95.91%
B 7459 6333 36 36 0.48% 0.57%
C 7459 6333 3728 3728 49.98% 58.87%
D 7459 6333 656 656 8.79% 10.36%

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 15183463 252082.65 236 230 60.2
A 12 3 73739 1220.45 236 230 60.2
A 3 78 30702 505.92 236 230 60.2
B 0 213 183507 1251.77 683 657 146.1
B 7 0 46729 315.4 683 657 146.1
B 4 81 43816 295.46 683 657 146.1
C 1 241 7906816 65218.63 436 433 121.2
C 15 224 2665446 21983.31 436 433 121.2
C 13 3 212798 1751.77 436 433 121.2
D 8 176 1533497 8477.92 634 607 180.8
D 3 12 578432 3195.76 634 607 180.8
D 2 172 363972 2009.65 634 607 180.8

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