ASTROSAT CZTI

Data Quality Report

Orbit 35017

Creation date: 2022-06-11T12:27:43.170194
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/AS1T05_010T01_9000005016_35017cztM0_level2.evt modeM0/AS1T05_010T01_9000005016_35017cztM0_level2_quad_clean.evt
Size (bytes)399,294,72092,393,280
Size380.8 MB 88.1 MB
Events in quadrant A2,442,430628,185
Events in quadrant B2,668,084637,803
Events in quadrant C2,846,708615,674
Events in quadrant D3,804,136574,434

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0101713
B0108272
C0110902
D0144242

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A487340.082085%
B4873320.656680%
C48731302.667761%
D48731372.811410%

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 6996 4874 0 0 0.00% 0.00%
B 6996 4874 23 23 0.33% 0.47%
C 6996 4874 119 119 1.70% 2.44%
D 6996 4874 127 127 1.82% 2.61%

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 74691 608.93 610 600 121.7
A 13 254 8676 66.37 610 600 121.7
A 13 6 6790 50.87 610 600 121.7
B 5 172 117971 1019.36 609 595 115.1
B 4 232 75297 648.76 609 595 115.1
B 0 190 31724 270.34 609 595 115.1
C 0 10 339523 2517.94 586 593 134.6
C 15 214 203923 1510.56 586 593 134.6
C 14 67 11550 81.4 586 593 134.6
D 8 195 964061 6829.26 580 565 141.1
D 10 118 174558 1233.26 580 565 141.1
D 13 249 138025 974.31 580 565 141.1

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