ASTROSAT CZTI

Data Quality Report

Orbit 53527

Creation date: 2025-08-20T17:49:00.838209
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_004T05_9000006502_53527cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53527cztM0_level2_quad_clean.evt
Size (bytes)621,527,04088,421,760
Size592.7 MB 84.3 MB
Events in quadrant A4,454,585622,131
Events in quadrant B3,714,346669,685
Events in quadrant C9,320,615402,678
Events in quadrant D5,031,988545,805

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174291
B0152811
C0319641
D0190941

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62573355.354004%
B62572804.474988%
C6257233137.254275%
D62574957.911140%

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 7367 6257 189 189 2.57% 3.02%
B 7367 6257 116 116 1.57% 1.85%
C 7367 6257 2045 2045 27.76% 32.68%
D 7367 6257 394 394 5.35% 6.30%

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 62 742655 4311.18 703 685 172.1
A 15 174 496704 2882.1 703 685 172.1
A 3 63 242193 1403.27 703 685 172.1
B 2 249 483815 3245.39 696 674 148.9
B 5 185 201922 1351.84 696 674 148.9
B 10 28 52937 351.06 696 674 148.9
C 15 224 2322353 15014.89 560 554 154.6
C 7 64 2080176 13448.75 560 554 154.6
C 1 241 1678235 10849.43 560 554 154.6
D 6 239 768696 3996.22 677 648 192.2
D 3 12 543746 2825.79 677 648 192.2
D 7 70 246027 1276.73 677 648 192.2

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