ASTROSAT CZTI

Data Quality Report

Orbit 30773

Creation date: 2024-06-27T20:19:26.882008
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_071T12_9000004446_30773cztM0_level2.evt modeM0/AS1A10_071T12_9000004446_30773cztM0_level2_quad_clean.evt
Size (bytes)612,815,04067,835,520
Size584.4 MB 64.7 MB
Events in quadrant A3,735,085414,154
Events in quadrant B5,457,493416,512
Events in quadrant C3,704,211392,083
Events in quadrant D5,224,013378,573

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149222
B0201452
C0148202
D0199992

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6481971.496683%
B64811342.067582%
C64811432.206450%
D64811772.731060%

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 7756 6481 19 19 0.24% 0.29%
B 7756 6481 7 7 0.09% 0.11%
C 7756 6481 7 7 0.09% 0.11%
D 7756 6481 132 132 1.70% 2.04%

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 0 13 155973 846.92 928 914 183.1
A 13 254 11253 56.47 928 914 183.1
A 3 137 8425 41.02 928 914 183.1
B 6 159 1802038 10571.74 921 903 170.4
B 12 111 20429 114.61 921 903 170.4
B 0 230 19449 108.86 921 903 170.4
C 14 238 143983 716.41 866 874 199.8
C 3 233 112258 557.59 866 874 199.8
C 0 10 55675 274.34 866 874 199.8
D 8 195 1366181 6204.55 863 844 220.1
D 10 253 342156 1551.04 863 844 220.1
D 2 250 103388 465.99 863 844 220.1

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