ASTROSAT CZTI

Data Quality Report

Orbit 05894

Creation date: 2024-06-27T15:00:33.872230
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_114T01_9000000764_05894cztM0_level2.evt modeM0/AS1A02_114T01_9000000764_05894cztM0_level2_quad_clean.evt
Size (bytes)497,525,76072,757,440
Size474.5 MB 69.4 MB
Events in quadrant A3,486,321432,171
Events in quadrant B3,586,584425,716
Events in quadrant C3,308,007429,976
Events in quadrant D4,193,020409,356

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520028
B01561420
C01513817
D01769054

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72581962.700468%
B72612142.947252%
C72631692.326862%
D72492944.055732%

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 7710 7271 0 0 0.00% 0.00%
B 7710 7271 19 19 0.25% 0.26%
C 7710 7270 0 0 0.00% 0.00%
D 7710 7271 93 93 1.21% 1.28%

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 15 236 188633 1070.36 855 835 175.5
A 12 194 8199 41.97 855 835 175.5
A 0 226 8076 41.27 855 835 175.5
B 15 255 165773 977.6 860 838 168.7
B 15 204 78126 458.1 860 838 168.7
B 12 111 16758 94.36 860 838 168.7
C 13 61 6707 29.59 846 848 198.0
C 9 247 5437 23.17 846 848 198.0
C 3 202 2067 6.15 846 848 198.0
D 13 105 423554 2062.7 832 806 204.9
D 2 152 204390 993.34 832 806 204.9
D 2 14 158386 768.87 832 806 204.9

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