ASTROSAT CZTI

Data Quality Report

Orbit 11248

Creation date: 2024-06-27T16:10:17.823689
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/AS1T01_202T01_9000001640_11248cztM0_level2.evt modeM0/AS1T01_202T01_9000001640_11248cztM0_level2_quad_clean.evt
Size (bytes)473,964,480111,265,920
Size452.0 MB 106.1 MB
Events in quadrant A3,322,339748,342
Events in quadrant B3,894,895746,021
Events in quadrant C2,859,827764,851
Events in quadrant D3,867,659689,539

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137002
B0155091
C0125281
D0154981

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6031981.624938%
B60312624.344222%
C6031300.497430%
D60312283.780468%

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 7046 6032 48 48 0.68% 0.80%
B 7046 6032 116 116 1.65% 1.92%
C 7046 6032 0 0 0.00% 0.00%
D 7046 6032 98 98 1.39% 1.62%

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 8 5 183586 1096.08 745 729 166.8
A 15 174 109688 653.12 745 729 166.8
A 1 162 37498 220.4 745 729 166.8
B 4 239 652743 4416.02 742 728 147.6
B 10 114 170354 1148.85 742 728 147.6
B 11 51 51981 347.13 742 728 147.6
C 13 61 5334 26.09 732 743 175.9
C 12 4 2764 11.49 732 743 175.9
C 4 254 2668 10.94 732 743 175.9
D 12 157 369896 2018.99 706 688 182.9
D 8 195 241396 1316.3 706 688 182.9
D 13 104 219727 1197.8 706 688 182.9

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