ASTROSAT CZTI

Data Quality Report

Orbit 54181

Creation date: 2025-10-03T18:08:46.942771
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_54181cztM0_level2.fits modeM0/AS1A14_012T01_9000006512_54181cztM0_level2_quad_clean.evt
Size (bytes)508,512,96095,544,000
Size485.0 MB 91.1 MB
Events in quadrant A3,748,286636,464
Events in quadrant B4,873,776679,334
Events in quadrant C3,718,696609,491
Events in quadrant D5,979,118515,270

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156901
B0190361
C0155071
D0222671

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64862664.101141%
B64852924.502699%
C64851312.020046%
D648588313.616037%

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 7601 6487 173 173 2.28% 2.67%
B 7600 6486 158 158 2.08% 2.44%
C 7600 6486 98 98 1.29% 1.51%
D 7600 6486 824 824 10.84% 12.70%

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 15 174 474575 2750.7 692 676 172.3
A 7 29 387206 2243.57 692 676 172.3
A 13 248 84842 488.53 692 676 172.3
B 5 236 597669 4124.67 680 657 144.7
B 14 167 581782 4014.91 680 657 144.7
B 15 20 427546 2949.32 680 657 144.7
C 15 177 261064 1410.19 669 664 184.7
C 12 252 213175 1150.85 669 664 184.7
C 10 171 207715 1121.28 669 664 184.7
D 8 176 3088347 16955.09 640 611 182.1
D 3 12 72239 393.32 640 611 182.1
D 7 62 66374 361.11 640 611 182.1

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