ASTROSAT CZTI

Data Quality Report

Orbit 20210824_C06_010T03_9000004658_level2

Creation date: 2021-08-25T14:44:00.173221
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/AS1C06_010T03_9000004658cztM0_level2_bc.evt modeM0/AS1C06_010T03_9000004658cztM0_level2_quad_clean.evt
Size (bytes)916,724,160219,438,720
Size874.3 MB 209.3 MB
Events in quadrant A3,186,9471,570,205
Events in quadrant B8,210,8031,500,559
Events in quadrant C5,934,6131,442,754
Events in quadrant D9,626,9741,317,868

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02380
B02380
C02380
D02380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0267040
B0442760
C0400060
D0514620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A117611291.096846%
B11759129310.995833%
C11761128710.942947%
D11760315426.819728%

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 12915 11760 1 1 0.01% 0.01%
B 12915 11758 7 7 0.05% 0.06%
C 12916 11759 5 5 0.04% 0.04%
D 12915 11757 199 199 1.54% 1.69%

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 12 96 735464 5290.26 628 619 138.9
A 13 254 21335 149.14 628 619 138.9
A 13 6 17492 121.47 628 619 138.9
B 6 159 3209847 26763.03 607 593 119.9
B 5 255 2156550 17979.24 607 593 119.9
B 5 172 193004 1604.58 607 593 119.9
C 3 233 3277734 23424.4 577 577 139.9
C 0 10 355194 2534.72 577 577 139.9
C 4 175 23046 160.6 577 577 139.9
D 12 33 4064485 30659.53 555 537 132.6
D 8 195 1845724 13920.59 555 537 132.6
D 13 249 1014432 7649.1 555 537 132.6

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