ASTROSAT CZTI

Data Quality Report

Orbit 18822

Creation date: 2024-06-27T17:55:17.923979
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/AS1A05_173T01_9000002812_18822cztM0_level2.evt modeM0/AS1A05_173T01_9000002812_18822cztM0_level2_quad_clean.evt
Size (bytes)547,793,28079,148,160
Size522.4 MB 75.5 MB
Events in quadrant A3,696,589482,245
Events in quadrant B3,658,743485,546
Events in quadrant C3,607,083468,291
Events in quadrant D5,135,049455,698

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153851
B0153151
C0151381
D0202481

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7249680.938060%
B7248851.172737%
C72481281.766004%
D724883611.534216%

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 7584 7250 0 0 0.00% 0.00%
B 7583 7249 11 11 0.15% 0.15%
C 7583 7249 5 5 0.07% 0.07%
D 7583 7249 611 611 8.06% 8.43%

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 8 144 215088 1174.66 896 877 182.4
A 8 205 14109 72.56 896 877 182.4
A 13 254 12324 62.77 896 877 182.4
B 4 216 51130 292.31 892 870 171.9
B 0 229 29186 164.69 892 870 171.9
B 6 36 28323 159.67 892 870 171.9
C 14 238 131511 646.46 855 863 202.1
C 3 233 78625 384.78 855 863 202.1
C 0 207 60087 293.05 855 863 202.1
D 12 110 900707 4465.28 817 793 201.5
D 1 52 536928 2660.25 817 793 201.5
D 7 38 495917 2456.75 817 793 201.5

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