ASTROSAT CZTI

Data Quality Report

Orbit 28428

Creation date: 2024-06-27T19:51:38.362298
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_101T21_9000004090_28428cztM0_level2.evt modeM0/AS1A10_101T21_9000004090_28428cztM0_level2_quad_clean.evt
Size (bytes)811,411,200185,731,200
Size773.8 MB 177.1 MB
Events in quadrant A5,196,7561,242,490
Events in quadrant B5,422,6431,266,310
Events in quadrant C5,353,0621,232,530
Events in quadrant D7,905,2151,171,404

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0223910
B0227940
C0225490
D0305120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A102961191.155789%
B102971621.573274%
C102971851.796640%
D102955875.701797%

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 12881 10297 0 0 0.00% 0.00%
B 12882 10298 28 28 0.22% 0.27%
C 12882 10298 2 2 0.02% 0.02%
D 12881 10295 442 442 3.43% 4.29%

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 6 16 57072 213.62 1330 1304 261.1
A 13 254 16197 57.05 1330 1304 261.1
A 3 137 11996 40.96 1330 1304 261.1
B 10 245 155227 642.84 1322 1291 239.5
B 0 230 53073 216.24 1322 1291 239.5
B 12 111 29012 115.76 1322 1291 239.5
C 14 238 213600 708.01 1305 1314 299.8
C 7 220 46157 149.56 1305 1314 299.8
C 13 61 8945 25.45 1305 1314 299.8
D 1 52 1578732 5230.02 1286 1253 301.6
D 8 195 744974 2465.75 1286 1253 301.6
D 2 250 438178 1448.59 1286 1253 301.6

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