ASTROSAT CZTI

Data Quality Report

Orbit 36468

Creation date: 2022-06-27T03:15:40.800205
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/AS1A11_049T02_9000005206_36468cztM0_level2.evt modeM0/AS1A11_049T02_9000005206_36468cztM0_level2_quad_clean.evt
Size (bytes)436,927,68071,055,360
Size416.7 MB 67.8 MB
Events in quadrant A2,742,719455,681
Events in quadrant B3,458,336437,334
Events in quadrant C2,968,779440,614
Events in quadrant D3,676,832420,735

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118143
B0141572
C0123542
D0148772

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5682110.193594%
B56822043.590285%
C5682631.108765%
D56822133.748680%

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 7083 5683 1 1 0.01% 0.02%
B 7083 5683 136 136 1.92% 2.39%
C 7083 5683 51 51 0.72% 0.90%
D 7083 5683 204 204 2.88% 3.59%

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 10 83 201071 1528.83 646 635 131.1
A 13 254 11237 80.87 646 635 131.1
A 10 255 9101 64.57 646 635 131.1
B 5 172 485750 3946.18 630 612 122.9
B 5 255 159972 1296.26 630 612 122.9
B 0 182 108579 878.22 630 612 122.9
C 0 10 263523 1803.6 621 624 145.8
C 15 214 246863 1689.31 621 624 145.8
C 0 207 34057 229.37 621 624 145.8
D 2 153 275627 1824.28 614 598 150.8
D 10 246 275419 1822.9 614 598 150.8
D 12 6 237369 1570.52 614 598 150.8

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