ASTROSAT CZTI

Data Quality Report

Orbit 20946

Creation date: 2024-06-27T18:21:31.928272
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_088T05_9000003088_20946cztM0_level2.evt modeM0/AS1A05_088T05_9000003088_20946cztM0_level2_quad_clean.evt
Size (bytes)523,249,92092,836,800
Size499.0 MB 88.5 MB
Events in quadrant A3,395,676612,004
Events in quadrant B3,767,462615,950
Events in quadrant C3,355,274577,461
Events in quadrant D4,897,770563,299

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137742
B0150592
C0136982
D0185202

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63481422.236925%
B63481963.087587%
C63481492.347196%
D63485378.459357%

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 7558 6349 1 1 0.01% 0.02%
B 7558 6349 23 23 0.30% 0.36%
C 7558 6349 0 0 0.00% 0.00%
D 7558 6349 401 401 5.31% 6.32%

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 5 16 35171 197.79 874 857 173.5
A 0 226 7570 38.69 874 857 173.5
A 3 137 6676 33.54 874 857 173.5
B 7 220 187990 1146.56 865 847 163.2
B 0 230 93035 564.81 865 847 163.2
B 0 229 37681 225.67 865 847 163.2
C 14 238 130524 687.93 816 824 188.5
C 7 247 36494 189.19 816 824 188.5
C 13 61 5717 25.95 816 824 188.5
D 1 52 1128664 5841.09 806 786 193.1
D 5 222 235360 1214.82 806 786 193.1
D 15 0 192695 993.86 806 786 193.1

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