ASTROSAT CZTI

Data Quality Report

Orbit 20210224_A10_045T08_9000004208_level2

Creation date: 2025-12-20T20:18:20.091686
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/AS1A10_045T08_9000004208cztM0_level2.fits modeM0/AS1A10_045T08_9000004208cztM0_level2_quad_clean.evt
Size (bytes)562,763,520464,820,480
Size536.7 MB 443.3 MB
Events in quadrant A3,564,4382,672,606
Events in quadrant B3,353,5692,686,224
Events in quadrant C3,221,0622,436,493
Events in quadrant D2,966,6622,348,051

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011680
B011740
C011680
D011700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01205130
B01373290
C02069920
D01758720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0930
C0940
D0950

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A573396711.170233%
B5736718973.306779%
C57300755613.186736%
D5730338216.668063%

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 65561 56461 0 0 0.00% 0.00%
B 65561 56459 0 0 0.00% 0.00%
C 65560 56417 0 0 0.00% 0.00%
D 65560 56435 0 0 0.00% 0.00%

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 0 29 2929 9.12 927 868 226.0
A 7 110 2820 8.64 927 868 226.0
A 0 30 2577 7.56 927 868 226.0
B 2 9 2781 10.96 887 846 176.6
B 2 8 2258 7.99 887 846 176.6
B 3 17 2225 7.81 887 846 176.6
C 12 241 2251 6.75 851 796 215.6
C 3 126 2174 6.39 851 796 215.6
C 3 187 2127 6.17 851 796 215.6
D 15 46 2195 6.33 846 772 224.8
D 3 14 2140 6.09 846 772 224.8
D 10 189 2118 5.99 846 772 224.8

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