ASTROSAT CZTI

Data Quality Report

Orbit 53142

Creation date: 2025-07-25T20:25:06.575088
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_011T07_9000006488_53142cztM0_level2.fits modeM0/AS1C09_011T07_9000006488_53142cztM0_level2_quad_clean.evt
Size (bytes)1,243,647,36071,642,880
Size1.2 GB 68.3 MB
Events in quadrant A17,973,09732,626
Events in quadrant B12,068,485518,536
Events in quadrant C11,054,907465,660
Events in quadrant D4,361,799630,687

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0584197
B0411160
C0380610
D0182400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7407715196.543810%
B7520277136.848404%
C7521257934.290653%
D75211121.489164%

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 7520 7407 5970 5970 79.39% 80.60%
B 7520 7520 2313 2313 30.76% 30.76%
C 7521 7520 2052 2052 27.28% 27.29%
D 7521 7521 87 87 1.16% 1.16%

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 9 191 16179639 198731.34 318 310 81.4
A 0 8 163528 2004.81 318 310 81.4
A 10 253 96268 1178.66 318 310 81.4
B 10 254 7901454 52000.76 709 685 151.9
B 2 249 716568 4711.75 709 685 151.9
B 0 213 154723 1013.84 709 685 151.9
C 15 157 4329651 23844.45 652 647 181.6
C 15 224 1524100 8391.28 652 647 181.6
C 15 147 536904 2953.74 652 647 181.6
D 12 3 416293 1912.52 756 722 217.3
D 2 62 264209 1212.61 756 722 217.3
D 3 12 158919 728.05 756 722 217.3

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