ASTROSAT CZTI

Data Quality Report

Orbit 38625

Creation date: 2024-06-27T21:54:17.298278
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/AS1A12_052T04_9000005388_38625cztM0_level2.fits modeM0/AS1A12_052T04_9000005388_38625cztM0_level2_quad_clean.evt
Size (bytes)306,221,76041,232,960
Size292.0 MB 39.3 MB
Events in quadrant A1,460,575321,174
Events in quadrant B2,075,816312,011
Events in quadrant C1,377,401314,612
Events in quadrant D6,201,05599,705

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A061031
B080891
C060321
D0202741

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A281440.142146%
B28141515.366027%
C2814120.426439%
D2814195869.580668%

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 2814 2814 1 1 0.04% 0.04%
B 2814 2814 145 145 5.15% 5.15%
C 2814 2814 10 10 0.36% 0.36%
D 2814 2814 2012 2012 71.50% 71.50%

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 248650 3923.51 306 301 63.3
A 15 174 9836 150.64 306 301 63.3
A 13 6 7162 108.39 306 301 63.3
B 4 171 543363 9205.83 298 290 59.0
B 0 183 125980 2130.62 298 290 59.0
B 0 186 60562 1021.69 298 290 59.0
C 15 214 116188 1682.78 290 292 68.9
C 14 254 89889 1300.92 290 292 68.9
C 3 110 15677 223.39 290 292 68.9
D 12 227 4827333 98359.04 190 184 49.1
D 2 16 198208 4034.98 190 184 49.1
D 2 250 140093 2850.82 190 184 49.1

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