ASTROSAT CZTI

Data Quality Report

Orbit 21743

Creation date: 2024-06-27T18:31:43.924952
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/AS1A07_005T01_9000003224_21743cztM0_level2.evt modeM0/AS1A07_005T01_9000003224_21743cztM0_level2_quad_clean.evt
Size (bytes)680,376,96097,822,080
Size648.9 MB 93.3 MB
Events in quadrant A6,742,029605,375
Events in quadrant B3,837,250672,021
Events in quadrant C3,270,527637,129
Events in quadrant D6,305,814584,504

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0244792
B0156472
C0138452
D0233612

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6641193829.182352%
B66411652.484566%
C6641801.204638%
D664174411.203132%

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 7626 6641 1114 1114 14.61% 16.77%
B 7626 6642 52 52 0.68% 0.78%
C 7626 6642 0 0 0.00% 0.00%
D 7626 6642 454 454 5.95% 6.84%

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 15 236 4018857 28335.08 706 693 141.8
A 13 254 10211 67.12 706 693 141.8
A 0 226 6044 37.73 706 693 141.8
B 6 36 255484 1590.65 839 820 160.1
B 3 64 151530 941.35 839 820 160.1
B 0 190 33654 205.08 839 820 160.1
C 14 238 125283 656.92 807 816 189.5
C 13 61 5523 24.84 807 816 189.5
C 10 23 2207 7.34 807 816 189.5
D 7 238 1819867 9588.83 779 758 189.7
D 1 52 680617 3583.65 779 758 189.7
D 12 235 566545 2982.36 779 758 189.7

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