ASTROSAT CZTI

Data Quality Report

Orbit 37781

Creation date: 2024-06-27T21:44:21.669975
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/AS1T05_057T01_9000005346_37781cztM0_level2.evt modeM0/AS1T05_057T01_9000005346_37781cztM0_level2_quad_clean.evt
Size (bytes)163,679,04021,715,200
Size156.1 MB 20.7 MB
Events in quadrant A2,329,13298,440
Events in quadrant B776,030165,631
Events in quadrant C757,103159,866
Events in quadrant D1,020,768152,256

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A076362
B030711
C028801
D038191

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A105083579.523810%
B1050121.142857%
C1050363.428571%
D1050474.476190%

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 1049 1049 806 806 76.84% 76.84%
B 1050 1050 4 4 0.38% 0.38%
C 1050 1050 45 45 4.29% 4.29%
D 1049 1049 52 52 4.96% 4.96%

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 15 222 1866468 88058.24 95 94 21.2
A 10 83 75247 3545.83 95 94 21.2
A 9 143 9532 445.3 95 94 21.2
B 0 189 118661 4144.77 139 136 28.6
B 0 229 51578 1798.91 139 136 28.6
B 0 230 21067 731.95 139 136 28.6
C 1 23 127821 3905.77 133 134 32.7
C 15 214 51702 1577.4 133 134 32.7
C 0 10 45129 1376.34 133 134 32.7
D 13 171 201091 5698.94 138 134 35.3
D 12 235 164874 4671.86 138 134 35.3
D 12 233 21033 592.68 138 134 35.3

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