ASTROSAT CZTI

Data Quality Report

Orbit 39585

Creation date: 2024-06-27T22:06:28.241481
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/AS1A12_018T01_9000005488_39585cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39585cztM0_level2_quad_clean.evt
Size (bytes)971,400,960154,120,320
Size926.4 MB 147.0 MB
Events in quadrant A7,403,0821,121,306
Events in quadrant B4,692,4811,166,533
Events in quadrant C17,336,074643,655
Events in quadrant D5,717,1341,010,949

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02120
B02120
C02120
D02120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0289103
B0215742
C0585882
D0242142

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A104512362.258157%
B10451450.430581%
C10451471445.105732%
D104511781.703186%

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 13287 10453 170 170 1.28% 1.63%
B 13287 10453 20 20 0.15% 0.19%
C 13287 10453 4162 4162 31.32% 39.82%
D 13287 10453 147 147 1.11% 1.41%

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 15 222 1489014 6599.03 1118 1097 225.5
A 9 143 751253 3327.0 1118 1097 225.5
A 10 83 697588 3088.99 1118 1097 225.5
B 5 255 148446 681.78 1120 1087 216.1
B 5 172 82846 378.27 1120 1087 216.1
B 12 111 27499 122.2 1120 1087 216.1
C 15 208 7964645 38932.29 878 882 204.6
C 9 187 5569917 27225.23 878 882 204.6
C 15 214 369187 1800.53 878 882 204.6
D 12 227 431748 1606.77 1097 1066 268.0
D 13 249 416342 1549.3 1097 1066 268.0
D 13 174 254016 943.7 1097 1066 268.0

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