ASTROSAT CZTI

Data Quality Report

Orbit 17881

Creation date: 2024-06-27T17:42:10.228009
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/AS1T03_075T01_9000002660_17881cztM0_level2.evt modeM0/AS1T03_075T01_9000002660_17881cztM0_level2_quad_clean.evt
Size (bytes)479,304,000102,332,160
Size457.1 MB 97.6 MB
Events in quadrant A3,438,447645,805
Events in quadrant B3,531,353663,033
Events in quadrant C3,502,985638,506
Events in quadrant D3,529,172625,907

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154831
B0155941
C0155051
D0159581

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75571852.448061%
B75571952.580389%
C75571882.487760%
D75571341.773190%

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 7667 7558 0 0 0.00% 0.00%
B 7667 7557 0 0 0.00% 0.00%
C 7667 7558 1 1 0.01% 0.01%
D 7667 7558 7 7 0.09% 0.09%

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 0 226 7801 37.91 893 870 182.8
A 3 137 7039 33.75 893 870 182.8
A 12 194 6436 30.45 893 870 182.8
B 12 111 21287 118.2 892 868 172.7
B 11 111 18809 103.86 892 868 172.7
B 14 111 16080 88.06 892 868 172.7
C 14 238 131499 645.71 856 859 202.3
C 3 233 20524 97.2 856 859 202.3
C 13 61 6063 25.72 856 859 202.3
D 7 238 164172 762.16 867 840 214.3
D 2 234 26464 119.57 867 840 214.3
D 8 195 20740 92.86 867 840 214.3

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