ASTROSAT CZTI

Data Quality Report

Orbit 06257

Creation date: 2024-06-27T15:04:49.874800
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/AS1A02_151T01_9000000818_06257cztM0_level2.evt modeM0/AS1A02_151T01_9000000818_06257cztM0_level2_quad_clean.evt
Size (bytes)514,425,600103,158,720
Size490.6 MB 98.4 MB
Events in quadrant A3,361,025661,360
Events in quadrant B3,583,534667,929
Events in quadrant C3,269,379652,453
Events in quadrant D4,849,344613,629

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155913
B0161302
C0155232
D0199832

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7598240.315873%
B7598630.829166%
C7598160.210582%
D75983234.251119%

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 7803 7599 0 0 0.00% 0.00%
B 7803 7599 13 13 0.17% 0.17%
C 7803 7599 0 0 0.00% 0.00%
D 7803 7599 263 263 3.37% 3.46%

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 13 210 15327 82.13 864 845 176.3
A 8 15 14044 74.86 864 845 176.3
A 0 226 8406 42.88 864 845 176.3
B 11 51 120186 711.83 874 852 167.6
B 15 35 32282 187.48 874 852 167.6
B 3 64 27304 157.79 874 852 167.6
C 13 61 6592 29.66 836 838 194.0
C 9 54 3162 11.98 836 838 194.0
C 15 159 2530 8.72 836 838 194.0
D 12 220 1347237 6594.92 823 798 204.2
D 13 137 207020 1010.08 823 798 204.2
D 2 152 80345 389.62 823 798 204.2

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