ASTROSAT CZTI

Data Quality Report

Orbit 26059

Creation date: 2024-06-27T19:24:22.924966
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/AS1A09_142T01_9000003766_26059cztM0_level2.evt modeM0/AS1A09_142T01_9000003766_26059cztM0_level2_quad_clean.evt
Size (bytes)731,047,680101,954,880
Size697.2 MB 97.2 MB
Events in quadrant A3,486,814698,111
Events in quadrant B3,438,319700,713
Events in quadrant C3,409,717668,306
Events in quadrant D11,324,353524,606

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149030
B0148800
C0147000
D0385050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7102751.056041%
B71031051.478249%
C71021251.760068%
D7102274438.637004%

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 7282 7102 19 19 0.26% 0.27%
B 7283 7104 8 8 0.11% 0.11%
C 7282 7103 1 1 0.01% 0.01%
D 7281 7101 2509 2509 34.46% 35.33%

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 13 113504 645.9 861 842 174.4
A 11 29 46030 259.07 861 842 174.4
A 13 254 10761 56.87 861 842 174.4
B 5 172 39833 236.59 855 831 164.8
B 0 190 24506 143.62 855 831 164.8
B 12 111 19270 111.85 855 831 164.8
C 14 238 130617 658.86 831 835 197.0
C 8 208 27451 135.12 831 835 197.0
C 3 233 9875 45.89 831 835 197.0
D 1 3 7584847 39889.61 736 718 190.1
D 7 38 570095 2994.7 736 718 190.1
D 1 52 139638 730.67 736 718 190.1

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