ASTROSAT CZTI

Data Quality Report

Orbit 52486

Creation date: 2025-06-25T18:34:37.936221
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_037T01_9000006476_52486cztM0_level2.fits modeM0/AS1A13_037T01_9000006476_52486cztM0_level2_quad_clean.evt
Size (bytes)1,050,033,60076,368,960
Size1001.4 MB 72.8 MB
Events in quadrant A3,754,846660,709
Events in quadrant B5,282,457690,305
Events in quadrant C10,824,959434,650
Events in quadrant D18,438,85616,234

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165542
B0207622
C0371932
D0597714

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73303715.061392%
B73316268.539081%
C7331267836.529805%
D7330718197.967258%

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 7420 7333 47 47 0.63% 0.64%
B 7421 7334 191 191 2.57% 2.60%
C 7421 7334 2254 2254 30.37% 30.73%
D 7420 7330 6918 6918 93.23% 94.38%

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 26 230458 1159.98 805 784 198.0
A 13 248 118301 593.53 805 784 198.0
A 4 61 59624 297.18 805 784 198.0
B 10 254 1266117 7474.64 777 749 169.3
B 5 172 378568 2231.81 777 749 169.3
B 10 44 246552 1451.98 777 749 169.3
C 15 224 3030504 17276.5 636 630 175.4
C 12 252 2300202 13112.28 636 630 175.4
C 15 248 1697867 9677.73 636 630 175.4
D 15 93 16306551 230162.45 244 234 70.8
D 6 42 794919 11216.92 244 234 70.8
D 7 38 81290 1144.1 244 234 70.8

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