ASTROSAT CZTI

Data Quality Report

Orbit 20210407_A10_102T10_9000004282_level2

Creation date: 2025-12-23T20:05:43.051938
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_102T10_9000004282cztM0_level2.fits modeM0/AS1A10_102T10_9000004282cztM0_level2_quad_clean.evt
Size (bytes)719,752,320606,977,280
Size686.4 MB 578.9 MB
Events in quadrant A4,566,2343,616,399
Events in quadrant B4,249,2903,537,312
Events in quadrant C4,286,3463,306,167
Events in quadrant D3,851,9143,077,188

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014400
B014400
C014400
D014400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01491680
B02147410
C01978840
D01753090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A706308681.228940%
B7063015362.174713%
C7063027773.931757%
D7063018402.605125%

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 81756 70631 0 0 0.00% 0.00%
B 81756 70630 0 0 0.00% 0.00%
C 81756 70631 0 0 0.00% 0.00%
D 81756 70606 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 7 110 3741 9.24 1190 1124 283.1
A 0 29 3736 9.23 1190 1124 283.1
A 9 19 3314 7.74 1190 1124 283.1
B 2 9 3327 10.29 1123 1077 218.6
B 5 128 2879 8.24 1123 1077 218.6
B 3 80 2800 7.88 1123 1077 218.6
C 12 241 3028 6.88 1133 1067 284.9
C 3 187 3004 6.8 1133 1067 284.9
C 3 126 2945 6.59 1133 1067 284.9
D 15 46 2940 6.65 1102 1010 290.1
D 10 189 2703 5.84 1102 1010 290.1
D 6 231 2635 5.6 1102 1010 290.1

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