ASTROSAT CZTI

Data Quality Report

Orbit 20170211_A02_108T01_9000001024_level2

Creation date: 2025-11-09T14:17:29.578565
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/AS1A02_108T01_9000001024cztM0_level2.fits modeM0/AS1A02_108T01_9000001024cztM0_level2_quad_clean.evt
Size (bytes)1,480,466,8801,515,542,400
Size1.4 GB 1.4 GB
Events in quadrant A8,550,6628,438,628
Events in quadrant B8,776,7669,420,128
Events in quadrant C8,820,0208,851,572
Events in quadrant D7,639,5248,150,827

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A032820
B032820
C032820
D032820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02530
B02530
C02530
D02530

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04570330
B03356990
C03679800
D03668740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1611491858311.531564%
B16114918271.133733%
C16114916631.031964%
D16114931651.964021%

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 186409 161126 0 0 0.00% 0.00%
B 186409 161139 0 0 0.00% 0.00%
C 186409 161140 0 0 0.00% 0.00%
D 186409 161112 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 8272 11.02 2220 2067 563.2
A 7 110 7094 8.93 2220 2067 563.2
A 0 30 6288 7.5 2220 2067 563.2
B 2 9 7354 11.28 2312 2196 457.4
B 3 17 6056 8.44 2312 2196 457.4
B 14 254 5972 8.26 2312 2196 457.4
C 1 80 6391 6.88 2331 2149 616.7
C 1 81 6384 6.87 2331 2149 616.7
C 12 241 6220 6.6 2331 2149 616.7
D 3 14 5621 6.27 2177 1976 581.5
D 6 231 5599 6.23 2177 1976 581.5
D 11 82 5434 5.95 2177 1976 581.5

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