ASTROSAT CZTI

Data Quality Report

Orbit 19538

Creation date: 2024-06-27T18:04:07.471453
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_142T01_9000002904_19538cztM0_level2.evt modeM0/AS1A05_142T01_9000002904_19538cztM0_level2_quad_clean.evt
Size (bytes)138,559,68042,894,720
Size132.1 MB 40.9 MB
Events in quadrant A998,884296,540
Events in quadrant B1,015,523300,756
Events in quadrant C1,072,509280,351
Events in quadrant D976,844281,887

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0433
B0420
C0422
D0422

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04225150
B04280132
C04541188
D04252141

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1905160.839895%
B1917331.721440%
C1902311.629863%
D191190.470958%

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 3149 1948 0 0 0.00% 0.00%
B 3149 1955 0 0 0.00% 0.00%
C 3147 1955 0 0 0.00% 0.00%
D 3149 1955 1 1 0.03% 0.05%

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 0 226 2239 37.15 259 255 53.4
A 13 254 2151 35.5 259 255 53.4
A 3 137 1841 29.7 259 255 53.4
B 12 111 5672 107.88 258 252 50.2
B 11 111 4940 93.31 258 252 50.2
B 14 111 4625 87.04 258 252 50.2
C 3 233 58420 992.53 245 246 58.6
C 14 238 39315 666.57 245 246 58.6
C 5 112 18397 309.68 245 246 58.6
D 12 218 11583 183.9 250 243 61.7
D 15 0 10173 161.04 250 243 61.7
D 2 234 5819 90.43 250 243 61.7

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