ASTROSAT CZTI

Data Quality Report

Orbit 20237

Creation date: 2024-06-27T18:12:50.464625
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/AS1T03_123T01_9000003000_20237cztM0_level2.evt modeM0/AS1T03_123T01_9000003000_20237cztM0_level2_quad_clean.evt
Size (bytes)461,076,48071,035,200
Size439.7 MB 67.7 MB
Events in quadrant A3,336,208437,091
Events in quadrant B3,418,900442,349
Events in quadrant C3,311,495411,935
Events in quadrant D3,462,878413,561

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135422
B0137422
C0134752
D0142342

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63901211.893584%
B63901352.112676%
C63901382.159624%
D6390951.486698%

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 7515 6392 0 0 0.00% 0.00%
B 7515 6392 1 1 0.01% 0.02%
C 7515 6392 0 0 0.00% 0.00%
D 7515 6392 20 20 0.27% 0.31%

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 4 2 19934 112.27 859 844 170.0
A 0 226 7277 37.83 859 844 170.0
A 3 137 6725 34.59 859 844 170.0
B 10 245 50508 306.17 849 828 162.3
B 0 214 32841 197.29 849 828 162.3
B 12 111 19988 118.08 849 828 162.3
C 14 238 127192 672.13 807 814 188.0
C 3 233 28587 147.71 807 814 188.0
C 13 61 5623 25.58 807 814 188.0
D 11 176 191689 949.04 829 808 201.1
D 7 238 46477 227.06 829 808 201.1
D 5 222 43016 209.85 829 808 201.1

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