ASTROSAT CZTI

Data Quality Report

Orbit 28935

Creation date: 2024-06-27T19:58:14.602582
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_082T04_9000004150_28935cztM0_level2.evt modeM0/AS1A10_082T04_9000004150_28935cztM0_level2_quad_clean.evt
Size (bytes)535,069,440105,750,720
Size510.3 MB 100.9 MB
Events in quadrant A3,288,523699,836
Events in quadrant B3,398,918726,728
Events in quadrant C3,496,170687,363
Events in quadrant D5,591,475646,433

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138102
B0141023
C0144532
D0209972

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6341701.103927%
B6341951.498186%
C63412714.273774%
D63414356.860117%

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 8916 6343 0 0 0.00% 0.00%
B 8916 6343 2 2 0.02% 0.03%
C 8916 6343 0 0 0.00% 0.00%
D 8916 6343 334 334 3.75% 5.27%

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 10996 59.54 851 835 170.7
A 3 137 7951 41.7 851 835 170.7
A 0 226 7220 37.41 851 835 170.7
B 5 255 20085 120.86 857 837 159.3
B 12 111 19161 115.06 857 837 159.3
B 11 111 17509 104.69 857 837 159.3
C 14 238 177399 929.98 823 831 189.9
C 14 254 57698 299.52 823 831 189.9
C 3 233 24911 126.83 823 831 189.9
D 8 195 2405122 12633.28 812 793 190.3
D 1 52 50238 259.8 812 793 190.3
D 12 79 44323 228.72 812 793 190.3

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