ASTROSAT CZTI

Data Quality Report

Orbit 26975

Creation date: 2024-06-27T19:35:08.540902
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/AS1C05_019T03_9000003898_26975cztM0_level2.evt modeM0/AS1C05_019T03_9000003898_26975cztM0_level2_quad_clean.evt
Size (bytes)711,927,360128,194,560
Size678.9 MB 122.3 MB
Events in quadrant A8,934,260764,612
Events in quadrant B3,677,238907,686
Events in quadrant C3,511,107869,347
Events in quadrant D4,950,878838,653

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0314390
B0156180
C0151560
D0195000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7197212929.581770%
B71981922.667408%
C71981291.792164%
D71982853.959433%

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 7622 7197 1697 1697 22.26% 23.58%
B 7623 7198 100 100 1.31% 1.39%
C 7623 7198 30 30 0.39% 0.42%
D 7623 7198 218 218 2.86% 3.03%

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 14 235 6014906 39614.85 747 728 151.8
A 13 170 17583 111.02 747 728 151.8
A 8 192 14979 93.87 747 728 151.8
B 5 172 321281 2005.69 839 816 159.8
B 0 230 31269 190.6 839 816 159.8
B 12 111 19568 117.36 839 816 159.8
C 2 16 143939 755.65 811 817 189.4
C 14 238 129371 678.73 811 817 189.4
C 15 208 55058 286.38 811 817 189.4
D 1 52 800352 4100.87 816 791 195.0
D 2 250 642976 3293.7 816 791 195.0
D 11 176 271562 1388.76 816 791 195.0

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