ASTROSAT CZTI

Data Quality Report

Orbit 30667

Creation date: 2024-06-27T20:18:22.268640
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_094T79_9000004422_30667cztM0_level2.evt modeM0/AS1A10_094T79_9000004422_30667cztM0_level2_quad_clean.evt
Size (bytes)639,970,560125,501,760
Size610.3 MB 119.7 MB
Events in quadrant A3,186,427876,004
Events in quadrant B5,033,194868,657
Events in quadrant C3,358,086832,826
Events in quadrant D7,356,031761,574

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137161
B0199291
C0138151
D0264221

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6621370.558828%
B6622590.890969%
C6622741.117487%
D6622123118.589550%

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 7516 6621 10 10 0.13% 0.15%
B 7517 6622 4 4 0.05% 0.06%
C 7517 6622 0 0 0.00% 0.00%
D 7517 6623 1256 1256 16.71% 18.96%

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 115471 721.24 793 775 159.0
A 13 254 12097 71.2 793 775 159.0
A 8 192 10102 58.65 793 775 159.0
B 6 159 1906495 12758.12 786 766 149.4
B 12 111 18811 120.8 786 766 149.4
B 11 111 16940 108.28 786 766 149.4
C 3 233 187885 1053.96 762 767 177.5
C 14 238 124714 698.14 762 767 177.5
C 0 10 33002 181.57 762 767 177.5
D 8 195 2192397 12766.57 728 710 171.7
D 12 227 1579258 9195.04 728 710 171.7
D 2 250 334879 1946.53 728 710 171.7

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