ASTROSAT CZTI

Data Quality Report

Orbit 37074

Creation date: 2024-06-27T21:35:14.334859
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/AS1A09_138T04_9000005282_37074cztM0_level2.evt modeM0/AS1A09_138T04_9000005282_37074cztM0_level2_quad_clean.evt
Size (bytes)441,601,92059,716,800
Size421.1 MB 57.0 MB
Events in quadrant A2,758,908375,797
Events in quadrant B2,900,357375,923
Events in quadrant C2,775,076362,821
Events in quadrant D4,599,389341,712

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111553
B0116872
C0109882
D0171132

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5009240.479138%
B5009360.718706%
C5009751.497305%
D50092695.370333%

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 7042 5010 14 14 0.20% 0.28%
B 7042 5010 15 15 0.21% 0.30%
C 7042 5010 60 60 0.85% 1.20%
D 7042 5010 254 254 3.61% 5.07%

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 262206 2120.46 613 602 123.4
A 7 3 78648 632.61 613 602 123.4
A 9 143 41237 329.37 613 602 123.4
B 0 229 157091 1345.86 609 596 116.3
B 5 172 137554 1177.85 609 596 116.3
B 4 232 63241 538.75 609 596 116.3
C 0 10 230542 1683.62 588 593 136.6
C 15 214 211079 1541.12 588 593 136.6
C 14 254 15041 105.78 588 593 136.6
D 6 112 1465375 10382.77 582 568 141.1
D 1 52 306441 2168.07 582 568 141.1
D 1 47 168790 1192.38 582 568 141.1

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