ASTROSAT CZTI

Data Quality Report

Orbit 46816

Creation date: 2024-06-27T23:28:01.477785
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/AS1C07_001T10_9000006272_46816cztM0_level2.fits modeM0/AS1C07_001T10_9000006272_46816cztM0_level2_quad_clean.evt
Size (bytes)868,078,080200,563,200
Size827.9 MB 191.3 MB
Events in quadrant A11,806,6291,304,534
Events in quadrant B6,023,9371,355,852
Events in quadrant C5,521,2441,332,852
Events in quadrant D7,776,3561,181,418

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02660
B02660
C02660
D02660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0433428
B0272312
C0264562
D0321952

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A129804143.189522%
B129822882.218456%
C129821461.124634%
D129835494.228607%

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 13762 12983 5 5 0.04% 0.04%
B 13762 12984 21 21 0.15% 0.16%
C 13762 12984 5 5 0.04% 0.04%
D 13763 12985 305 305 2.22% 2.35%

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 10 83 6294879 21720.38 1397 1366 289.8
A 13 248 33144 109.67 1397 1366 289.8
A 0 243 26637 87.22 1397 1366 289.8
B 3 112 248083 895.65 1400 1356 275.5
B 0 198 63161 224.36 1400 1356 275.5
B 15 36 56558 200.39 1400 1356 275.5
C 14 254 34953 104.25 1389 1395 321.9
C 3 233 29616 87.67 1389 1395 321.9
C 0 207 11939 32.76 1389 1395 321.9
D 13 249 1207153 3589.85 1363 1320 335.9
D 1 52 660334 1961.93 1363 1320 335.9
D 12 233 255157 755.69 1363 1320 335.9

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