ASTROSAT CZTI

Data Quality Report

Orbit 20191222_A08_009T01_9000003382_level2

Creation date: 2025-12-06T20:26:35.164899
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/AS1A08_009T01_9000003382cztM0_level2.fits modeM0/AS1A08_009T01_9000003382cztM0_level2_quad_clean.evt
Size (bytes)1,384,200,0001,345,023,360
Size1.3 GB 1.3 GB
Events in quadrant A8,612,3168,189,869
Events in quadrant B8,226,8188,239,809
Events in quadrant C8,295,4727,777,621
Events in quadrant D7,009,4196,754,199

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02450
B02460
C02460
D02460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02937230
B03008490
C02962770
D04291450

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A029020
B029040
C029040
D029020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14263613330.934547%
B14265516591.162946%
C14264421121.480609%
D14264399486.974054%

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 209035 142711 0 0 0.00% 0.00%
B 209035 142739 0 0 0.00% 0.00%
C 209035 142703 0 0 0.00% 0.00%
D 209035 142651 0 0 0.00% 0.00%

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 0 29 8490 11.41 2246 2114 558.8
A 7 110 7063 8.86 2246 2114 558.8
A 0 30 6561 7.96 2246 2114 558.8
B 2 9 6826 11.41 2175 2085 415.7
B 2 8 5670 8.62 2175 2085 415.7
B 14 254 5424 8.03 2175 2085 415.7
C 1 80 6404 7.8 2191 2056 557.3
C 1 81 6370 7.74 2191 2056 557.3
C 3 234 5800 6.72 2191 2056 557.3
D 7 3 5020 5.94 2006 1828 537.0
D 6 67 4978 5.87 2006 1828 537.0
D 10 189 4953 5.82 2006 1828 537.0

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