ASTROSAT CZTI

Data Quality Report

Orbit 54172

Creation date: 2025-10-03T04:10:29.740384
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_012T01_9000006512_54172cztM0_level2.fits modeM0/AS1A14_012T01_9000006512_54172cztM0_level2_quad_clean.evt
Size (bytes)754,292,160106,767,360
Size719.3 MB 101.8 MB
Events in quadrant A6,061,507694,300
Events in quadrant B4,085,523822,862
Events in quadrant C5,410,144721,466
Events in quadrant D11,737,717432,949

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0238551
B0180421
C0214062
D0404881

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A1140456246376488140454020513838
B1-1-1
C1-1-1
D1-1-1

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A807997712.093081%
B80791051.299666%
C80782623.243377%
D8078310338.412974%

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 8079 8079 685 685 8.48% 8.48%
B 8079 8079 28 28 0.35% 0.35%
C 8078 8078 159 159 1.97% 1.97%
D 8078 8078 2620 2620 32.43% 32.43%

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 7 29 2007444 9915.96 812 792 202.4
A 15 174 417897 2061.14 812 792 202.4
A 0 8 264115 1301.22 812 792 202.4
B 4 171 149380 817.45 855 825 181.7
B 7 0 137214 750.5 855 825 181.7
B 15 20 115936 633.42 855 825 181.7
C 10 171 872043 3804.53 840 831 229.0
C 15 177 489153 2132.47 840 831 229.0
C 9 38 473172 2062.69 840 831 229.0
D 8 176 7301308 41322.05 624 597 176.7
D 2 165 1001575 5665.54 624 597 176.7
D 3 12 221383 1249.65 624 597 176.7

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