ASTROSAT CZTI

Data Quality Report

Orbit 28933

Creation date: 2024-06-27T19:58:06.155355
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/AS1A10_048T07_9000004148_28933cztM0_level2.evt modeM0/AS1A10_048T07_9000004148_28933cztM0_level2_quad_clean.evt
Size (bytes)476,804,16098,953,920
Size454.7 MB 94.4 MB
Events in quadrant A3,167,010643,483
Events in quadrant B3,268,930668,683
Events in quadrant C3,434,772631,649
Events in quadrant D4,138,157610,025

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135892
B0138612
C0143612
D0165992

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6353310.487958%
B6353430.676846%
C63531812.849048%
D63531442.266646%

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 7543 6353 0 0 0.00% 0.00%
B 7543 6353 0 0 0.00% 0.00%
C 7543 6353 1 1 0.01% 0.02%
D 7543 6353 116 116 1.54% 1.83%

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 11292 63.74 820 802 164.6
A 3 137 7857 42.87 820 802 164.6
A 0 226 7068 38.07 820 802 164.6
B 12 111 19147 116.63 825 806 157.3
B 11 111 17353 105.22 825 806 157.3
B 10 245 16721 101.21 825 806 157.3
C 14 238 152934 824.59 790 798 184.5
C 3 233 141767 764.07 790 798 184.5
C 14 254 34702 183.76 790 798 184.5
D 8 195 931769 4875.85 790 767 190.9
D 1 52 180022 938.8 790 767 190.9
D 12 233 29017 147.95 790 767 190.9

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