ASTROSAT CZTI

Data Quality Report

Orbit 18684

Creation date: 2024-06-27T17:53:38.570005
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/AS1A05_226T06_9000002792_18684cztM0_level2.evt modeM0/AS1A05_226T06_9000002792_18684cztM0_level2_quad_clean.evt
Size (bytes)506,468,16077,843,520
Size483.0 MB 74.2 MB
Events in quadrant A3,448,657488,397
Events in quadrant B3,444,921492,206
Events in quadrant C3,562,242464,070
Events in quadrant D4,436,914454,379

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143512
B0142612
C0145882
D0174633

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6566811.233628%
B6566751.142248%
C65661241.888517%
D65651902.894136%

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 7711 6566 3 3 0.04% 0.05%
B 7711 6566 3 3 0.04% 0.05%
C 7711 6566 17 17 0.22% 0.26%
D 7710 6565 136 136 1.76% 2.07%

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 6 16 56953 319.5 879 863 175.6
A 13 254 10577 55.33 879 863 175.6
A 0 226 7726 39.09 879 863 175.6
B 3 64 25795 152.45 865 846 163.7
B 12 111 19716 115.3 865 846 163.7
B 11 111 17284 100.44 865 846 163.7
C 9 54 199378 1032.78 825 832 192.2
C 14 238 129970 671.74 825 832 192.2
C 3 233 19940 99.39 825 832 192.2
D 7 238 867765 4299.51 838 814 201.6
D 1 52 322407 1594.89 838 814 201.6
D 7 96 42750 207.97 838 814 201.6

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