ASTROSAT CZTI

Data Quality Report

Orbit 37885

Creation date: 2024-06-27T21:45:42.670456
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/AS1C07_001T12_9000005352_37885cztM0_level2.evt modeM0/AS1C07_001T12_9000005352_37885cztM0_level2_quad_clean.evt
Size (bytes)406,008,00069,523,200
Size387.2 MB 66.3 MB
Events in quadrant A2,721,988464,023
Events in quadrant B3,029,108446,356
Events in quadrant C2,716,986427,007
Events in quadrant D3,468,081397,323

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113373
B0124982
C0112992
D0138472

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5290140.264650%
B52902053.875236%
C5290280.529301%
D52901873.534972%

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 7294 5291 4 4 0.05% 0.08%
B 7294 5291 169 169 2.32% 3.19%
C 7294 5291 24 24 0.33% 0.45%
D 7294 5291 162 162 2.22% 3.06%

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 10 83 341640 2874.52 596 587 118.6
A 12 227 30774 254.43 596 587 118.6
A 13 248 17274 140.64 596 587 118.6
B 5 172 645767 5937.72 579 565 108.7
B 0 183 25859 232.78 579 565 108.7
B 0 213 19495 174.21 579 565 108.7
C 15 214 226066 1695.02 575 577 133.0
C 0 10 148247 1110.05 575 577 133.0
C 14 254 84447 630.46 575 577 133.0
D 12 233 545520 3867.29 574 559 140.9
D 2 249 165719 1172.05 574 559 140.9
D 2 250 146998 1039.2 574 559 140.9

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