ASTROSAT CZTI

Data Quality Report

Orbit 30772

Creation date: 2024-06-27T20:19:26.255133
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_30772cztM0_level2.evt modeM0/AS1A10_071T12_9000004446_30772cztM0_level2_quad_clean.evt
Size (bytes)572,379,84077,584,320
Size545.9 MB 74.0 MB
Events in quadrant A3,343,805495,618
Events in quadrant B5,158,344500,325
Events in quadrant C3,552,145465,841
Events in quadrant D4,854,645448,378

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136652
B0193882
C0142304
D0186622

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6294230.365427%
B6294701.112170%
C62931081.716193%
D62931953.098681%

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 7529 6295 5 5 0.07% 0.08%
B 7529 6294 1 1 0.01% 0.02%
C 7528 6293 7 7 0.09% 0.11%
D 7528 6294 280 280 3.72% 4.45%

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 59034 343.06 851 836 169.6
A 13 254 11004 59.94 851 836 169.6
A 3 137 7934 41.84 851 836 169.6
B 6 159 1784961 11181.84 848 829 159.6
B 0 230 20494 123.25 848 829 159.6
B 12 111 19180 115.01 848 829 159.6
C 3 233 206622 1096.73 802 807 187.7
C 14 238 133714 708.22 802 807 187.7
C 0 10 67387 354.78 802 807 187.7
D 8 195 1497036 7232.63 793 780 206.9
D 13 249 109018 523.2 793 780 206.9
D 2 250 80267 384.23 793 780 206.9

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