ASTROSAT CZTI

Data Quality Report

Orbit 12852

Creation date: 2024-06-27T16:33:08.411129
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/AS1G08_071T01_9000001888_12852cztM0_level2.evt modeM0/AS1G08_071T01_9000001888_12852cztM0_level2_quad_clean.evt
Size (bytes)486,564,48068,826,240
Size464.0 MB 65.6 MB
Events in quadrant A3,367,394418,131
Events in quadrant B4,473,133413,326
Events in quadrant C3,159,805415,400
Events in quadrant D3,312,363401,957

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137122
B0173631
C0130731
D0136601

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62351031.651965%
B62354387.024860%
C6235791.267041%
D6235791.267041%

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 7521 6237 0 0 0.00% 0.00%
B 7521 6237 218 218 2.90% 3.50%
C 7521 6237 1 1 0.01% 0.02%
D 7521 6237 6 6 0.08% 0.10%

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 12 189 111271 653.63 845 830 169.0
A 8 15 7627 40.23 845 830 169.0
A 0 226 7609 40.12 845 830 169.0
B 4 239 894722 5923.64 814 797 150.9
B 0 85 162206 1069.59 814 797 150.9
B 0 219 78312 513.66 814 797 150.9
C 13 61 6056 28.59 808 812 183.4
C 14 234 5871 27.58 808 812 183.4
C 4 112 3139 12.69 808 812 183.4
D 1 52 140694 728.0 813 793 192.2
D 13 104 40674 207.53 813 793 192.2
D 4 95 33739 171.44 813 793 192.2

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