ASTROSAT CZTI

Data Quality Report

Orbit 31354

Creation date: 2024-06-27T20:27:10.302729
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/AS1A10_101T01_9000004546_31354cztM0_level2.evt modeM0/AS1A10_101T01_9000004546_31354cztM0_level2_quad_clean.evt
Size (bytes)532,762,56079,320,960
Size508.1 MB 75.6 MB
Events in quadrant A3,318,629511,765
Events in quadrant B5,074,259506,443
Events in quadrant C3,518,051468,852
Events in quadrant D3,802,477480,639

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131401
B0192272
C0139391
D0150631

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6223871.398040%
B62221592.555448%
C62222403.857281%
D6223661.060582%

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 7498 6224 0 0 0.00% 0.00%
B 7497 6223 5 5 0.07% 0.08%
C 7497 6223 9 9 0.12% 0.14%
D 7498 6224 4 4 0.05% 0.06%

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 14605 80.4 859 845 171.1
A 3 137 8151 42.69 859 845 171.1
A 0 226 7450 38.6 859 845 171.1
B 6 159 1661664 10541.68 830 810 157.6
B 0 190 124040 782.16 830 810 157.6
B 12 111 18835 114.41 830 810 157.6
C 3 233 171516 947.59 785 791 180.2
C 14 238 158359 874.57 785 791 180.2
C 0 10 54537 298.31 785 791 180.2
D 8 195 641975 3320.79 823 805 193.1
D 2 234 26441 132.78 823 805 193.1
D 2 250 23610 118.11 823 805 193.1

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