ASTROSAT CZTI

Data Quality Report

Orbit 14151

Creation date: 2024-06-27T16:51:05.627150
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/AS1G08_068T01_9000002090_14151cztM0_level2.evt modeM0/AS1G08_068T01_9000002090_14151cztM0_level2_quad_clean.evt
Size (bytes)1,539,089,280241,868,160
Size1.4 GB 230.7 MB
Events in quadrant A9,595,5131,510,955
Events in quadrant B10,175,0661,581,951
Events in quadrant C10,501,9121,464,769
Events in quadrant D14,977,7091,378,914

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0412864
B0426683
C0424843
D0577923

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04100
B04100
C04100
D04100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A201611300.644809%
B201611410.699370%
C20161890.441446%
D2016117508.680125%

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 25667 20166 2 2 0.01% 0.01%
B 25667 20166 13 13 0.05% 0.06%
C 25667 20166 0 0 0.00% 0.00%
D 25667 20166 1302 1302 5.07% 6.46%

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 15 89252 176.7 2440 2390 491.6
A 12 189 61783 120.82 2440 2390 491.6
A 12 96 53735 104.45 2440 2390 491.6
B 0 189 185420 396.82 2441 2389 461.2
B 3 209 127410 271.05 2441 2389 461.2
B 0 85 108129 229.25 2441 2389 461.2
C 3 233 1319288 2418.49 2354 2371 544.5
C 13 61 16279 25.54 2354 2371 544.5
C 10 22 10917 15.69 2354 2371 544.5
D 10 157 4224783 7849.89 2271 2220 537.9
D 1 52 987010 1830.76 2271 2220 537.9
D 2 152 263458 485.65 2271 2220 537.9

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