ASTROSAT CZTI

Data Quality Report

Orbit 35367

Creation date: 2022-04-15T10:52:07.882039
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/AS1A11_099T01_9000005068_35367cztM0_level2.evt modeM0/AS1A11_099T01_9000005068_35367cztM0_level2_quad_clean.evt
Size (bytes)832,559,04072,218,880
Size794.0 MB 68.9 MB
Events in quadrant A2,998,964557,211
Events in quadrant B12,773,306188,186
Events in quadrant C3,678,565545,374
Events in quadrant D5,388,771505,606

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123693
B04173424
C0143335
D0200942

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5548370.666907%
B5545479986.546438%
C55461132.037505%
D55483666.596972%

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 7131 5549 14 14 0.20% 0.25%
B 7131 5549 4318 4318 60.55% 77.82%
C 7131 5548 99 99 1.39% 1.78%
D 7131 5549 328 328 4.60% 5.91%

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 15 169 298350 2249.12 653 639 132.4
A 10 83 119316 896.57 653 639 132.4
A 9 143 24057 176.92 653 639 132.4
B 4 251 11444351 216827.73 268 261 52.8
B 5 236 87523 1653.33 268 261 52.8
B 5 172 84252 1591.35 268 261 52.8
C 0 10 424418 2890.43 627 632 146.6
C 9 69 294707 2005.73 627 632 146.6
C 15 214 229249 1559.28 627 632 146.6
D 8 195 1118629 7209.17 625 608 155.1
D 1 52 744655 4797.73 625 608 155.1
D 12 235 339233 2183.51 625 608 155.1

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