ASTROSAT CZTI

Data Quality Report

Orbit 28547

Creation date: 2024-06-27T19:53:11.877515
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_102T07_9000004102_28547cztM0_level2.evt modeM0/AS1A10_102T07_9000004102_28547cztM0_level2_quad_clean.evt
Size (bytes)595,549,44093,176,640
Size568.0 MB 88.9 MB
Events in quadrant A4,010,673608,696
Events in quadrant B3,515,686620,652
Events in quadrant C3,382,802582,954
Events in quadrant D6,674,295542,853

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161492
B0145862
C0142632
D0244232

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66872143.200239%
B6688971.450359%
C66881011.510167%
D668876011.363636%

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 7587 6687 125 125 1.65% 1.87%
B 7588 6688 4 4 0.05% 0.06%
C 7588 6688 0 0 0.00% 0.00%
D 7588 6688 823 823 10.85% 12.31%

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 14 238 581449 3438.3 840 825 168.9
A 15 174 180159 1061.97 840 825 168.9
A 13 254 13060 72.45 840 825 168.9
B 4 80 110860 684.16 839 818 160.8
B 10 245 56699 347.43 839 818 160.8
B 0 230 38364 233.43 839 818 160.8
C 14 238 128725 674.5 800 805 189.7
C 7 247 106352 556.53 800 805 189.7
C 3 233 22255 113.1 800 805 189.7
D 1 52 2394802 12690.59 782 758 188.6
D 8 195 1078358 5712.25 782 758 188.6
D 2 250 128156 675.32 782 758 188.6

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