ASTROSAT CZTI

Data Quality Report

Orbit 35948

Creation date: 2022-06-09T04:35:51.623519
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/AS1A11_080T01_9000005146_35948cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35948cztM0_level2_quad_clean.evt
Size (bytes)588,191,04098,231,040
Size560.9 MB 93.7 MB
Events in quadrant A2,992,090677,148
Events in quadrant B7,619,105585,543
Events in quadrant C3,256,555660,729
Events in quadrant D3,537,356630,568

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124863
B0265842
C0130632
D0143312

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6014110.182907%
B6014213335.467243%
C6014691.147323%
D6014781.296974%

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 7296 6015 0 0 0.00% 0.00%
B 7296 6014 1760 1760 24.12% 29.27%
C 7296 6015 60 60 0.82% 1.00%
D 7296 6015 63 63 0.86% 1.05%

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 178138 1169.49 726 711 151.7
A 13 254 9593 58.54 726 711 151.7
A 3 137 7402 44.1 726 711 151.7
B 5 172 2190871 18339.91 614 601 119.4
B 5 14 940670 7871.53 614 601 119.4
B 5 31 928508 7769.69 614 601 119.4
C 15 214 250044 1520.92 699 706 163.9
C 0 10 225852 1373.35 699 706 163.9
C 0 207 19874 116.92 699 706 163.9
D 8 195 198186 1146.15 701 686 172.3
D 1 52 127017 733.14 701 686 172.3
D 10 118 108366 624.9 701 686 172.3

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