ASTROSAT CZTI

Data Quality Report

Orbit 37249

Creation date: 2024-06-27T21:37:24.913989
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_094T04_9000005288_37249cztM0_level2.evt modeM0/AS1A10_094T04_9000005288_37249cztM0_level2_quad_clean.evt
Size (bytes)260,061,12044,115,840
Size248.0 MB 42.1 MB
Events in quadrant A2,055,022272,552
Events in quadrant B1,669,289285,767
Events in quadrant C1,721,491283,474
Events in quadrant D2,214,331269,325

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A114034939764202446
B1-1-1
C1-1-1
D1-1-1

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A081541
B071021
C071421
D087391

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A31501785.650794%
B3150120.380952%
C3150441.396825%
D31501414.476190%

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 3150 3150 140 140 4.44% 4.44%
B 3150 3150 7 7 0.22% 0.22%
C 3150 3150 33 33 1.05% 1.05%
D 3150 3150 131 131 4.16% 4.16%

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 15 237 528441 7668.72 333 327 68.9
A 10 83 157808 2286.77 333 327 68.9
A 13 248 38122 548.81 333 327 68.9
B 5 200 121280 1835.12 340 332 65.9
B 0 190 75038 1133.5 340 332 65.9
B 0 230 32623 489.94 340 332 65.9
C 15 214 132960 1739.17 326 329 76.3
C 14 254 111369 1456.05 326 329 76.3
C 0 10 87289 1140.29 326 329 76.3
D 10 253 196032 2419.35 327 317 80.9
D 12 218 168057 2073.53 327 317 80.9
D 12 233 167037 2060.92 327 317 80.9

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