ASTROSAT CZTI

Data Quality Report

Orbit 28727

Creation date: 2024-06-27T19:55:28.414739
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_123T06_9000004122_28727cztM0_level2.evt modeM0/AS1A10_123T06_9000004122_28727cztM0_level2_quad_clean.evt
Size (bytes)241,182,72036,302,400
Size230.0 MB 34.6 MB
Events in quadrant A1,161,757241,070
Events in quadrant B1,166,372243,521
Events in quadrant C3,206,234213,535
Events in quadrant D1,606,359229,242

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050471
B049911
C0112171
D064231

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2378210.883095%
B2378381.597981%
C237870629.688814%
D23781164.878049%

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 2913 2378 0 0 0.00% 0.00%
B 2913 2378 0 0 0.00% 0.00%
C 2913 2378 185 185 6.35% 7.78%
D 2913 2378 81 81 2.78% 3.41%

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 15 174 23003 373.29 291 284 60.9
A 7 192 11067 177.17 291 284 60.9
A 13 254 4212 64.54 291 284 60.9
B 15 32 7037 115.49 293 284 58.5
B 12 111 6901 113.16 293 284 58.5
B 11 111 6083 99.18 293 284 58.5
C 3 233 2092228 32666.28 264 265 64.0
C 14 238 58745 913.17 264 265 64.0
C 14 254 24923 385.04 264 265 64.0
D 1 52 236817 3407.16 280 271 69.4
D 8 195 164981 2372.45 280 271 69.4
D 12 233 118275 1699.71 280 271 69.4

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