ASTROSAT CZTI

Data Quality Report

Orbit 09495

Creation date: 2024-06-27T15:46:52.634179
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/AS1G05_230T06_9000001350_09495cztM0_level2.evt modeM0/AS1G05_230T06_9000001350_09495cztM0_level2_quad_clean.evt
Size (bytes)210,876,48046,733,760
Size201.1 MB 44.6 MB
Events in quadrant A1,818,046311,378
Events in quadrant B1,470,325315,913
Events in quadrant C1,422,351311,683
Events in quadrant D1,494,874287,989

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166179533
B0122026153
C0122186301
D0130146957

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011163
B011157
C011157
D011157

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142
B0142
C0147
D0143

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A23722078.726813%
B2705873.216266%
C2737762.776763%
D2637963.640501%

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 6724 3158 51 51 0.76% 1.61%
B 6833 3539 1 1 0.01% 0.03%
C 6723 3531 0 0 0.00% 0.00%
D 6918 3446 18 18 0.26% 0.52%

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 8 5 227517 3429.74 318 312 66.2
A 15 174 169867 2559.49 318 312 66.2
A 1 162 84089 1264.64 318 312 66.2
B 4 173 33419 478.74 359 351 69.1
B 0 214 24931 355.86 359 351 69.1
B 0 187 9151 127.4 359 351 69.1
C 4 254 38397 463.09 350 351 82.2
C 9 68 14041 166.63 350 351 82.2
C 14 234 2765 29.38 350 351 82.2
D 13 104 76397 886.45 340 332 85.8
D 12 233 53830 623.46 340 332 85.8
D 8 195 26803 308.49 340 332 85.8

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