ASTROSAT CZTI

Data Quality Report

Orbit 20190909_A05_226T05_9000003148_level2

Creation date: 2025-12-03T12:44:06.852511
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/AS1A05_226T05_9000003148cztM0_level2.fits modeM0/AS1A05_226T05_9000003148cztM0_level2_quad_clean.evt
Size (bytes)231,140,160262,414,080
Size220.4 MB 250.3 MB
Events in quadrant A1,435,6121,660,953
Events in quadrant B1,364,0041,648,631
Events in quadrant C1,384,9541,561,624
Events in quadrant D1,170,0061,430,752

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0498360
B0522670
C0487560
D0655430

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04860
B04860
C04860
D04860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A239101170.489335%
B239102791.166876%
C239101460.610623%
D2391020318.494354%

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 28125 23907 0 0 0.00% 0.00%
B 28125 23908 0 0 0.00% 0.00%
C 28125 23910 0 0 0.00% 0.00%
D 28125 23894 0 0 0.00% 0.00%

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 0 29 1386 11.23 374 354 91.9
A 7 110 1246 9.71 374 354 91.9
A 9 19 1056 7.64 374 354 91.9
B 2 9 1125 10.64 361 345 73.3
B 3 17 911 7.72 361 345 73.3
B 2 8 896 7.52 361 345 73.3
C 1 80 1067 7.65 365 342 94.8
C 1 81 1047 7.44 365 342 94.8
C 3 126 998 6.92 365 342 94.8
D 6 231 855 6.04 334 306 90.9
D 10 189 849 5.97 334 306 90.9
D 6 67 827 5.73 334 306 90.9

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