ASTROSAT CZTI

Data Quality Report

Orbit 27882

Creation date: 2024-06-27T19:45:33.754741
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_024T01_9000004026_27882cztM0_level2.evt modeM0/AS1A10_024T01_9000004026_27882cztM0_level2_quad_clean.evt
Size (bytes)95,376,96022,613,760
Size91.0 MB 21.6 MB
Events in quadrant A628,394155,208
Events in quadrant B865,136149,618
Events in quadrant C568,614147,418
Events in quadrant D744,652144,235

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A026430
B033540
C024180
D029750

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1162242.065404%
B1162796.798623%
C116260.516351%
D1163363.095443%

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 1162 1162 19 19 1.64% 1.64%
B 1162 1162 51 51 4.39% 4.39%
C 1162 1162 0 0 0.00% 0.00%
D 1163 1163 31 31 2.67% 2.67%

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 13 79234 2609.8 141 138 30.3
A 13 254 2597 81.14 141 138 30.3
A 15 174 2351 73.02 141 138 30.3
B 5 172 132879 4664.6 136 133 28.5
B 0 230 56403 1977.29 136 133 28.5
B 0 190 40125 1405.29 136 133 28.5
C 3 233 28967 883.84 131 131 32.6
C 14 238 20990 639.34 131 131 32.6
C 8 208 3566 105.28 131 131 32.6
D 1 52 83294 2423.81 132 127 34.3
D 7 69 44359 1289.09 132 127 34.3
D 13 104 31633 918.21 132 127 34.3

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