ASTROSAT CZTI

Data Quality Report

Orbit 57377

Creation date: 2026-05-06T19:07:38.737486
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_102T01_9000006572_57377cztM0_level2.fits modeM0/AS1A14_102T01_9000006572_57377cztM0_level2_quad_clean.evt
Size (bytes)401,538,24087,249,600
Size382.9 MB 83.2 MB
Events in quadrant A2,841,418581,975
Events in quadrant B2,825,615622,500
Events in quadrant C5,400,427510,251
Events in quadrant D3,334,797513,264

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127711
B0127851
C0201812
D0141881

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5926891.501856%
B5927791.332883%
C592662410.529868%
D59262203.712454%

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 7011 5926 32 32 0.46% 0.54%
B 7012 5927 18 18 0.26% 0.30%
C 7011 5926 591 591 8.43% 9.97%
D 7010 5925 200 200 2.85% 3.38%

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 61 167955 1036.67 649 633 161.4
A 3 14 50813 310.9 649 633 161.4
A 10 251 49147 300.58 649 633 161.4
B 5 185 90726 659.52 634 611 136.6
B 10 247 81830 594.42 634 611 136.6
B 10 16 28875 206.86 634 611 136.6
C 15 224 2639485 16190.59 592 587 163.0
C 8 7 241305 1476.89 592 587 163.0
C 14 254 48715 295.28 592 587 163.0
D 8 240 371208 2108.54 618 590 175.8
D 15 142 125196 708.92 618 590 175.8
D 8 160 96033 543.0 618 590 175.8

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