ASTROSAT CZTI

Data Quality Report

Orbit 53257

Creation date: 2025-08-03T10:58:11.336354
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/AS1C09_011T08_9000006492_53257cztM0_level2.fits modeM0/AS1C09_011T08_9000006492_53257cztM0_level2_quad_clean.evt
Size (bytes)656,524,80099,360,000
Size626.1 MB 94.8 MB
Events in quadrant A4,212,855670,619
Events in quadrant B4,275,881713,842
Events in quadrant C9,940,825505,864
Events in quadrant D5,305,870608,685

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179750
B0179200
C0346064
D0209440

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73161872.556042%
B73172323.170698%
C7316197927.050301%
D73162213.020776%

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 7316 7316 154 154 2.10% 2.10%
B 7317 7317 171 171 2.34% 2.34%
C 7316 7316 1809 1809 24.73% 24.73%
D 7316 7316 226 226 3.09% 3.09%

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 7 206 608776 3338.34 739 722 182.1
A 0 8 125285 683.88 739 722 182.1
A 4 238 115971 632.74 739 722 182.1
B 2 249 471552 3005.65 734 710 156.7
B 4 81 338840 2158.48 734 710 156.7
B 5 185 219139 1394.36 734 710 156.7
C 15 224 4715332 26820.32 636 629 175.8
C 10 22 645342 3667.55 636 629 175.8
C 15 147 621129 3529.81 636 629 175.8
D 6 42 724175 3572.91 712 681 202.5
D 10 172 600121 2960.28 712 681 202.5
D 1 0 275134 1355.36 712 681 202.5

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