ASTROSAT CZTI

Data Quality Report

Orbit 45947

Creation date: 2024-06-27T23:18:02.586096
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/AS1A13_071T06_9000006146_45947cztM0_level2.fits modeM0/AS1A13_071T06_9000006146_45947cztM0_level2_quad_clean.evt
Size (bytes)1,333,388,160175,216,320
Size1.2 GB 167.1 MB
Events in quadrant A10,512,5381,286,431
Events in quadrant B22,961,794737,702
Events in quadrant C5,374,6321,285,836
Events in quadrant D9,549,3861,134,853

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0395232
B0768082
C0254992
D0369289

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02540
B02540
C02540
D02540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A124262542.044101%
B12427649552.265229%
C12427680.547196%
D124264673.758249%

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 13826 12427 19 19 0.14% 0.15%
B 13827 12427 5320 5320 38.48% 42.81%
C 13827 12428 12 12 0.09% 0.10%
D 13826 12426 379 379 2.74% 3.05%

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 5241798 18552.04 1352 1323 282.5
A 0 247 20267 67.06 1352 1323 282.5
A 3 137 15568 50.43 1352 1323 282.5
B 3 112 18099225 82804.71 1119 1083 218.6
B 4 158 142392 646.53 1119 1083 218.6
B 0 199 87212 394.07 1119 1083 218.6
C 14 254 84526 264.28 1341 1350 314.7
C 12 2 34653 105.81 1341 1350 314.7
C 3 233 16363 47.7 1341 1350 314.7
D 11 241 3162871 9573.13 1320 1281 330.3
D 12 233 584843 1767.0 1320 1281 330.3
D 12 2 153715 461.56 1320 1281 330.3

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