ASTROSAT CZTI

Data Quality Report

Orbit 24981

Creation date: 2024-06-27T19:12:17.929868
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/AS1A08_003T18_9000003658_24981cztM0_level2.evt modeM0/AS1A08_003T18_9000003658_24981cztM0_level2_quad_clean.evt
Size (bytes)1,032,382,080179,591,040
Size984.6 MB 171.3 MB
Events in quadrant A6,517,7001,154,011
Events in quadrant B6,851,0581,176,850
Events in quadrant C6,810,3581,104,535
Events in quadrant D10,160,8131,057,421

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02820
B02820
C02820
D02820

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0285213
B0292183
C0290735
D0394603

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13689910.664767%
B136891110.810870%
C136872051.497772%
D136875514.025718%

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 17808 13692 0 0 0.00% 0.00%
B 17808 13692 16 16 0.09% 0.12%
C 17807 13690 29 29 0.16% 0.21%
D 17807 13690 447 447 2.51% 3.27%

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 13 254 19256 52.22 1688 1652 337.1
A 3 137 14965 39.49 1688 1652 337.1
A 0 226 14486 38.07 1688 1652 337.1
B 10 246 96518 302.64 1683 1642 313.5
B 3 64 79096 247.07 1683 1642 313.5
B 12 111 39174 119.72 1683 1642 313.5
C 14 238 258449 678.29 1617 1631 378.6
C 0 10 128569 335.26 1617 1631 378.6
C 7 247 94765 245.98 1617 1631 378.6
D 7 238 1512307 3862.96 1614 1569 391.1
D 10 70 970216 2476.83 1614 1569 391.1
D 1 52 926730 2365.64 1614 1569 391.1

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