ASTROSAT CZTI

Data Quality Report

Orbit 35754

Creation date: 2022-05-13T11:16:33.030510
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_142T06_9000005132_35754cztM0_level2.evt modeM0/AS1A09_142T06_9000005132_35754cztM0_level2_quad_clean.evt
Size (bytes)427,849,92098,213,760
Size408.0 MB 93.7 MB
Events in quadrant A3,056,997664,037
Events in quadrant B3,178,914671,392
Events in quadrant C2,833,520660,191
Events in quadrant D3,544,818624,641

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121992
B0126231
C0112501
D0138771

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50542384.709141%
B50541312.592006%
C5054761.503759%
D50542023.996834%

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 7147 5055 230 230 3.22% 4.55%
B 7147 5055 103 103 1.44% 2.04%
C 7147 5055 63 63 0.88% 1.25%
D 7147 5055 189 189 2.64% 3.74%

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 8 192 508806 4146.07 624 614 122.6
A 10 83 130210 1057.31 624 614 122.6
A 13 254 6869 51.03 624 614 122.6
B 5 172 448462 3899.54 619 605 114.8
B 0 190 98774 854.77 619 605 114.8
B 4 232 62486 538.81 619 605 114.8
C 15 214 213854 1508.67 616 621 141.3
C 0 10 206808 1458.82 616 621 141.3
C 2 16 6548 41.93 616 621 141.3
D 13 249 326811 2160.71 616 601 151.0
D 14 52 288791 1908.88 616 601 151.0
D 13 13 142902 942.56 616 601 151.0

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