ASTROSAT CZTI

Data Quality Report

Orbit 54126

Creation date: 2025-09-30T01:46:30.329694
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_54126cztM0_level2.fits modeM0/AS1A14_012T01_9000006512_54126cztM0_level2_quad_clean.evt
Size (bytes)599,518,08086,207,040
Size571.7 MB 82.2 MB
Events in quadrant A2,860,742619,490
Events in quadrant B3,799,315652,855
Events in quadrant C3,159,689590,841
Events in quadrant D11,864,154290,864

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135571
B0159092
C0145131
D0396851

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6535881.346595%
B65352994.575363%
C65351912.922724%
D6535337151.583780%

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 7425 6535 12 12 0.16% 0.18%
B 7425 6535 169 169 2.28% 2.59%
C 7425 6535 108 108 1.45% 1.65%
D 7424 6534 3284 3284 44.23% 50.26%

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 79873 462.92 692 674 171.1
A 3 14 22179 125.69 692 674 171.1
A 4 3 21075 119.24 692 674 171.1
B 5 236 301573 2083.69 676 652 144.4
B 5 185 196730 1357.72 676 652 144.4
B 15 20 130851 901.55 676 652 144.4
C 1 241 378908 2058.74 674 667 183.7
C 12 252 34119 182.08 674 667 183.7
C 15 233 33928 181.04 674 667 183.7
D 7 70 6964099 50264.3 482 458 138.5
D 8 176 1341800 9681.95 482 458 138.5
D 4 7 787239 5679.07 482 458 138.5

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