ASTROSAT CZTI

Data Quality Report

Orbit 17661

Creation date: 2024-06-27T17:39:16.120242
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/AS1A05_208T01_9000002614_17661cztM0_level2.evt modeM0/AS1A05_208T01_9000002614_17661cztM0_level2_quad_clean.evt
Size (bytes)112,049,28028,992,960
Size106.9 MB 27.6 MB
Events in quadrant A765,061192,745
Events in quadrant B759,424198,470
Events in quadrant C900,438189,112
Events in quadrant D864,687187,018

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A032341
B032101
C036061
D035651

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1493634.219692%
B1493604.018754%
C1493785.224380%
D1493614.085733%

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 2383 1493 0 0 0.00% 0.00%
B 2383 1494 0 0 0.00% 0.00%
C 2383 1494 0 0 0.00% 0.00%
D 2383 1493 19 19 0.80% 1.27%

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 14 237 21155 508.27 192 188 41.3
A 15 174 3784 87.17 192 188 41.3
A 0 226 1726 37.28 192 188 41.3
B 0 219 7765 191.73 191 186 39.5
B 12 111 4643 112.75 191 186 39.5
B 11 111 4105 99.14 191 186 39.5
C 3 233 143716 3105.77 186 187 46.2
C 14 238 28124 604.52 186 187 46.2
C 13 61 1281 23.67 186 187 46.2
D 1 52 135207 2827.09 189 184 47.8
D 13 189 7328 149.58 189 184 47.8
D 2 234 4781 96.25 189 184 47.8

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