ASTROSAT CZTI

Data Quality Report

Orbit 53483

Creation date: 2025-08-17T20:09:13.622950
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_002T06_9000006496_53483cztM0_level2.fits modeM0/AS1A14_002T06_9000006496_53483cztM0_level2_quad_clean.evt
Size (bytes)893,376,00078,289,920
Size852.0 MB 74.7 MB
Events in quadrant A10,636,693439,219
Events in quadrant B3,928,380713,652
Events in quadrant C14,107,698186,389
Events in quadrant D3,895,165578,529

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0361091
B0159411
C0464091
D0161675

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6489259740.021575%
B64891502.311604%
C6489469572.353213%
D64881772.728113%

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 7579 6489 2389 2389 31.52% 36.82%
B 7579 6489 39 39 0.51% 0.60%
C 7578 6488 4602 4602 60.73% 70.93%
D 7578 6488 103 103 1.36% 1.59%

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 7031687 45560.44 637 623 154.3
A 3 62 426634 2760.5 637 623 154.3
A 15 174 281985 1823.19 637 623 154.3
B 0 213 351447 2279.83 727 706 153.8
B 10 28 164144 1062.35 727 706 153.8
B 5 185 151353 979.21 727 706 153.8
C 7 64 9157729 84695.92 393 390 108.1
C 1 241 1411873 13054.76 393 390 108.1
C 15 224 993398 9184.3 393 390 108.1
D 3 144 547851 2707.98 710 679 202.1
D 12 35 170525 840.57 710 679 202.1
D 2 120 98997 486.58 710 679 202.1

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