ASTROSAT CZTI

Data Quality Report

Orbit 55505

Creation date: 2025-12-31T20:34:56.208096
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_099T01_9000006536_55505cztM0_level2.fits modeM0/AS1A14_099T01_9000006536_55505cztM0_level2_quad_clean.evt
Size (bytes)521,657,28091,218,240
Size497.5 MB 87.0 MB
Events in quadrant A3,249,838629,004
Events in quadrant B2,991,686675,107
Events in quadrant C8,112,328464,284
Events in quadrant D4,463,416550,896

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01422770
B01346384
C028681248
D01779977

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63451221.922774%
B63401121.766562%
C6336156924.763258%
D63452744.318361%

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 7446 6353 28 28 0.38% 0.44%
B 7440 6346 6 6 0.08% 0.09%
C 7450 6344 1292 1292 17.34% 20.37%
D 7464 6354 164 164 2.20% 2.58%

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 4 159 276037 1595.27 693 674 172.6
A 3 78 199794 1153.57 693 674 172.6
A 0 8 35777 203.36 693 674 172.6
B 5 172 123973 857.45 677 653 143.8
B 10 247 118782 821.36 677 653 143.8
B 12 111 16968 113.44 677 653 143.8
C 9 38 5471205 33405.39 593 586 163.8
C 1 16 82819 502.14 593 586 163.8
C 15 199 54190 327.32 593 586 163.8
D 11 129 399216 2145.85 663 633 185.7
D 10 181 382378 2055.2 663 633 185.7
D 6 239 367827 1976.86 663 633 185.7

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