ASTROSAT CZTI

Data Quality Report

Orbit 20200624_A09_013T02_9000003734_level2

Creation date: 2021-01-10T09:32:38.539830
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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_013T02_9000003734cztM0_level2_bc.evt modeM0/AS1A09_013T02_9000003734cztM0_level2_quad_clean.evt
Size (bytes)4,645,457,2801,824,177,600
Size4.3 GB 1.7 GB
Events in quadrant A29,668,57911,882,050
Events in quadrant B28,083,24812,088,353
Events in quadrant C26,181,44711,549,856
Events in quadrant D48,221,99311,146,900

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02020
B02020
C02020
D02020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025580
B025580
C025580
D025580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02628180
B02651270
C02616360
D03216190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12532814981.195264%
B12533223111.843903%
C12533022561.800048%
D12531635362.821667%

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 145863 125351 5 5 0.00% 0.00%
B 145863 125344 79 79 0.05% 0.06%
C 145863 125345 7 7 0.00% 0.01%
D 145863 125346 1258 1258 0.86% 1.00%

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 3398991 2349.7 6750 6657 1443.7
A 13 254 178716 119.18 6750 6657 1443.7
A 13 170 118436 77.42 6750 6657 1443.7
B 3 64 1044857 818.17 6847 6703 1268.9
B 3 112 236234 180.89 6847 6703 1268.9
B 0 245 203765 155.3 6847 6703 1268.9
C 3 233 988875 639.34 6536 6524 1536.5
C 2 16 60607 35.2 6536 6524 1536.5
C 13 61 37623 20.24 6536 6524 1536.5
D 8 195 10936733 6479.61 6522 6357 1686.9
D 1 52 10626773 6295.86 6522 6357 1686.9
D 2 244 553944 324.61 6522 6357 1686.9

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