ASTROSAT CZTI

Data Quality Report

Orbit 53072

Creation date: 2025-07-21T04:32:32.862446
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_53072cztM0_level2.fits modeM0/AS1C09_011T07_9000006488_53072cztM0_level2_quad_clean.evt
Size (bytes)2,615,411,520188,409,600
Size2.4 GB 179.7 MB
Events in quadrant A42,234,514255,664
Events in quadrant B18,666,2881,470,609
Events in quadrant C20,670,4411,316,541
Events in quadrant D13,855,7801,417,953

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03660
B03660
C03660
D03660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01374124
B0681064
C0739994
D0539134

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A180201581087.735849%
B18021323117.929083%
C18021343419.055546%
D1802112536.952999%

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 19434 18022 13529 13529 69.62% 75.07%
B 19436 18025 2347 2347 12.08% 13.02%
C 19436 18025 2765 2765 14.23% 15.34%
D 19436 18025 995 995 5.12% 5.52%

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 33851428 140894.4 936 914 240.3
A 13 248 2088819 8690.39 936 914 240.3
A 7 206 1344563 5592.61 936 914 240.3
B 1 255 3639930 10036.8 1720 1659 362.5
B 4 81 2676748 7379.7 1720 1659 362.5
B 10 63 2007183 5532.59 1720 1659 362.5
C 15 224 7543901 16122.17 1690 1669 467.8
C 9 38 1738120 3711.81 1690 1669 467.8
C 12 254 1090442 2327.34 1690 1669 467.8
D 12 17 2652964 5191.0 1785 1704 510.7
D 3 144 670328 1309.12 1785 1704 510.7
D 1 241 596360 1164.3 1785 1704 510.7

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