ASTROSAT CZTI

Data Quality Report

Orbit 09215

Creation date: 2024-06-27T15:42:50.079948
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/AS1A02_178T01_9000001286_09215cztM0_level2.evt modeM0/AS1A02_178T01_9000001286_09215cztM0_level2_quad_clean.evt
Size (bytes)1,341,132,480223,804,800
Size1.2 GB 213.4 MB
Events in quadrant A12,649,3721,404,180
Events in quadrant B9,872,6021,411,486
Events in quadrant C7,972,0901,384,642
Events in quadrant D8,928,0831,358,793

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03600
B03602
C03600
D03600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04976418
B04098232
C03607520
D03878525

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A176954062.294433%
B176922621.480895%
C176931090.616063%
D176912831.599683%

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 20221 17704 110 110 0.54% 0.62%
B 20221 17703 62 62 0.31% 0.35%
C 20221 17704 0 0 0.00% 0.00%
D 20221 17704 140 140 0.69% 0.79%

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 5 3781900 8933.87 2098 2054 423.1
A 5 16 238128 557.97 2098 2054 423.1
A 1 162 202875 474.65 2098 2054 423.1
B 8 234 1064968 2652.69 2101 2055 400.7
B 0 214 119755 293.74 2101 2055 400.7
B 0 246 96036 234.54 2101 2055 400.7
C 3 233 49180 100.25 2022 2029 470.3
C 7 221 26757 52.58 2022 2029 470.3
C 13 61 15421 28.47 2022 2029 470.3
D 1 52 301919 553.06 2013 1967 542.3
D 9 64 246935 451.68 2013 1967 542.3
D 2 14 220189 402.36 2013 1967 542.3

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