ASTROSAT CZTI

Data Quality Report

Orbit 31129

Creation date: 2024-06-27T20:23:58.557626
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/AS1T04_018T01_9000004494_31129cztM0_level2.evt modeM0/AS1T04_018T01_9000004494_31129cztM0_level2_quad_clean.evt
Size (bytes)837,259,200143,242,560
Size798.5 MB 136.6 MB
Events in quadrant A4,898,237923,241
Events in quadrant B8,338,220907,470
Events in quadrant C5,113,246894,035
Events in quadrant D6,284,278873,270

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0216231
B0329643
C0219291
D0258771

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02160
B02160
C02160
D02160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10688420.392964%
B106871561.459717%
C106871211.132217%
D106871271.188360%

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 11213 10689 1 1 0.01% 0.01%
B 11212 10688 38 38 0.34% 0.36%
C 11212 10688 9 9 0.08% 0.08%
D 11212 10688 62 62 0.55% 0.58%

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 12 96 24220 91.19 1263 1237 252.0
A 13 254 19548 72.65 1263 1237 252.0
A 3 137 12778 45.79 1263 1237 252.0
B 6 159 2961607 12479.32 1246 1215 237.2
B 0 190 98392 409.64 1246 1215 237.2
B 0 183 95073 395.65 1246 1215 237.2
C 14 238 195124 687.25 1210 1213 282.2
C 0 10 155197 545.75 1210 1213 282.2
C 2 114 24118 81.18 1210 1213 282.2
D 8 195 1150585 3980.7 1218 1183 288.7
D 2 250 152373 523.61 1218 1183 288.7
D 12 218 123276 422.84 1218 1183 288.7

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