ASTROSAT CZTI

Data Quality Report

Orbit 45681

Creation date: 2024-06-27T23:14:59.088480
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/AS1A13_071T05_9000006120_45681cztM0_level2.fits modeM0/AS1A13_071T05_9000006120_45681cztM0_level2_quad_clean.evt
Size (bytes)953,210,880111,072,960
Size909.1 MB 105.9 MB
Events in quadrant A6,779,349832,143
Events in quadrant B4,321,238843,937
Events in quadrant C14,484,352547,775
Events in quadrant D9,109,580605,940

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0253020
B0179951
C0482730
D0324520

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76531151.502679%
B76521702.221641%
C7653328242.885143%
D7653179823.494055%

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 7653 7653 5 5 0.07% 0.07%
B 7652 7652 104 104 1.36% 1.36%
C 7653 7653 3317 3317 43.34% 43.34%
D 7653 7653 1645 1645 21.49% 21.49%

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 10 83 3293978 18056.44 869 849 182.4
A 14 235 53468 288.51 869 849 182.4
A 0 243 23445 123.89 869 849 182.4
B 5 172 224349 1319.92 863 836 169.3
B 3 112 185766 1092.08 863 836 169.3
B 0 189 129959 762.52 863 836 169.3
C 9 54 11074326 61880.78 764 768 178.9
C 14 254 318169 1773.69 764 768 178.9
C 15 208 47940 263.6 764 768 178.9
D 1 52 5189843 26937.42 768 744 192.6
D 13 249 510387 2645.64 768 744 192.6
D 2 249 128961 665.59 768 744 192.6

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