ASTROSAT CZTI

Data Quality Report

Orbit 16785

Creation date: 2024-06-27T17:27:55.514287
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/AS1A05_004T07_9000002492_16785cztM0_level2.evt modeM0/AS1A05_004T07_9000002492_16785cztM0_level2_quad_clean.evt
Size (bytes)566,916,48072,371,520
Size540.7 MB 69.0 MB
Events in quadrant A4,885,664424,496
Events in quadrant B3,345,777453,179
Events in quadrant C3,655,062434,690
Events in quadrant D4,834,070416,906

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0187443
B0141142
C0150392
D0188692

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66244707.095411%
B6624500.754831%
C6624861.298309%
D66242523.804348%

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 7565 6626 344 344 4.55% 5.19%
B 7565 6626 1 1 0.01% 0.02%
C 7565 6626 3 3 0.04% 0.05%
D 7565 6626 166 166 2.19% 2.51%

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 15 174 1784561 11256.3 781 765 158.5
A 15 190 59201 368.75 781 765 158.5
A 9 143 22699 138.41 781 765 158.5
B 15 35 80635 515.22 805 785 155.0
B 0 229 41369 261.86 805 785 155.0
B 0 230 21725 135.11 805 785 155.0
C 3 233 476559 2623.84 772 779 181.3
C 14 238 119551 655.01 772 779 181.3
C 0 207 44716 242.3 772 779 181.3
D 1 52 1819469 9711.48 767 743 187.3
D 12 218 48592 255.5 767 743 187.3
D 10 70 33463 174.72 767 743 187.3

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