ASTROSAT CZTI

Data Quality Report

Orbit 20210703_C06_001T01_9000004508_level2

Creation date: 2021-07-05T17:31:45.757341
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/AS1C06_001T01_9000004508cztM0_level2_bc.evt modeM0/AS1C06_001T01_9000004508cztM0_level2_quad_clean.evt
Size (bytes)1,270,771,200366,742,080
Size1.2 GB 349.8 MB
Events in quadrant A5,532,4472,455,623
Events in quadrant B12,061,0742,445,356
Events in quadrant C5,642,4522,338,236
Events in quadrant D13,664,8912,268,097

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04760
B04760
C04760
D04760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0506710
B0717180
C0523090
D0769190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A232693171.362328%
B232696512.797714%
C232697483.214577%
D2326911094.765998%

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 28889 23269 0 0 0.00% 0.00%
B 28889 23269 0 0 0.00% 0.00%
C 28889 23270 6 6 0.02% 0.03%
D 28889 23269 84 84 0.29% 0.36%

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 11 47 51146 165.25 1412 1391 301.1
A 13 254 37640 120.39 1412 1391 301.1
A 12 96 22611 70.48 1412 1391 301.1
B 6 159 6422087 24058.58 1414 1383 266.9
B 0 190 106946 395.55 1414 1383 266.9
B 15 33 69293 254.46 1414 1383 266.9
C 0 10 230387 731.78 1347 1345 313.0
C 3 233 59059 184.39 1347 1345 313.0
C 2 114 43137 133.52 1347 1345 313.0
D 8 195 5374880 16173.25 1358 1324 332.2
D 12 79 2405769 7236.86 1358 1324 332.2
D 13 174 223619 669.06 1358 1324 332.2

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