ASTROSAT CZTI

Data Quality Report

Orbit 27543

Creation date: 2024-06-27T19:41:17.294802
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/AS1A09_038T27_9000003950_27543cztM0_level2.evt modeM0/AS1A09_038T27_9000003950_27543cztM0_level2_quad_clean.evt
Size (bytes)115,272,00031,334,400
Size109.9 MB 29.9 MB
Events in quadrant A722,900213,364
Events in quadrant B787,499221,598
Events in quadrant C737,685209,454
Events in quadrant D1,140,599195,363

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030670
B032530
C030720
D043470

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A146220.136799%
B146260.410397%
C146280.547196%
D1462966.566347%

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 1462 1462 0 0 0.00% 0.00%
B 1462 1462 4 4 0.27% 0.27%
C 1462 1462 0 0 0.00% 0.00%
D 1462 1462 104 104 7.11% 7.11%

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 13 254 2910 69.38 187 184 39.3
A 3 137 1819 41.61 187 184 39.3
A 0 226 1602 36.09 187 184 39.3
B 15 33 13580 352.82 190 185 38.0
B 15 32 9774 252.57 190 185 38.0
B 10 245 7420 190.57 190 185 38.0
C 14 238 29260 674.71 179 181 43.1
C 8 128 4194 93.11 179 181 43.1
C 7 221 2142 45.5 179 181 43.1
D 1 52 432298 10178.66 172 167 42.5
D 2 250 50131 1176.88 172 167 42.5
D 2 234 5982 136.97 172 167 42.5

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