ASTROSAT CZTI

Data Quality Report

Orbit 27461

Creation date: 2024-06-27T19:40:18.853903
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_249T01_9000003934_27461cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27461cztM0_level2_quad_clean.evt
Size (bytes)421,358,40085,777,920
Size401.8 MB 81.8 MB
Events in quadrant A3,108,541552,982
Events in quadrant B3,077,725556,854
Events in quadrant C3,064,248528,827
Events in quadrant D3,088,052525,467

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128930
B0127810
C0127340
D0132170

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6210691.111111%
B6211671.078731%
C6211691.110932%
D6211570.917727%

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 7165 6210 1 1 0.01% 0.02%
B 7166 6211 1 1 0.01% 0.02%
C 7166 6211 0 0 0.00% 0.00%
D 7166 6211 15 15 0.21% 0.24%

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 6 16 59132 366.12 791 776 159.4
A 13 254 10263 59.52 791 776 159.4
A 3 137 7349 41.24 791 776 159.4
B 12 111 18095 116.24 777 758 149.1
B 11 111 16271 104.01 777 758 149.1
B 14 111 14709 93.54 777 758 149.1
C 14 238 120616 680.36 750 754 176.2
C 10 22 17098 92.77 750 754 176.2
C 13 61 5066 24.48 750 754 176.2
D 2 250 179957 975.46 766 747 183.7
D 2 234 26280 138.98 766 747 183.7
D 2 120 10648 53.89 766 747 183.7

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