ASTROSAT CZTI

Data Quality Report

Orbit 29791

Creation date: 2024-06-27T20:07:47.544264
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_291T01_9000004278_29791cztM0_level2.evt modeM0/AS1T03_291T01_9000004278_29791cztM0_level2_quad_clean.evt
Size (bytes)546,546,240103,956,480
Size521.2 MB 99.1 MB
Events in quadrant A3,286,141703,611
Events in quadrant B5,393,468703,597
Events in quadrant C3,290,843663,039
Events in quadrant D4,154,019637,249

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136362
B0199943
C0135252
D0165272

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6312610.966413%
B63111762.788781%
C6311881.394391%
D63111061.679607%

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 7537 6313 9 9 0.12% 0.14%
B 7536 6312 12 12 0.16% 0.19%
C 7536 6312 0 0 0.00% 0.00%
D 7536 6312 79 79 1.05% 1.25%

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 12 96 36098 213.15 842 828 165.5
A 13 254 12264 69.11 842 828 165.5
A 3 137 8028 43.51 842 828 165.5
B 6 159 1891601 12135.16 835 815 155.8
B 0 229 153425 979.46 835 815 155.8
B 0 190 25068 155.66 835 815 155.8
C 14 238 139141 756.35 796 801 182.9
C 2 114 15338 79.48 796 801 182.9
C 3 233 14727 76.14 796 801 182.9
D 8 195 450271 2419.79 795 774 185.8
D 7 80 158709 850.22 795 774 185.8
D 12 33 156620 838.97 795 774 185.8

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