ASTROSAT CZTI

Data Quality Report

Orbit 58566

Creation date: 2026-07-25T20:10:59.969588
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/AS1A14_044T04_9000006592_58566cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58566cztM0_level2_quad_clean.evt
Size (bytes)492,143,04087,088,320
Size469.3 MB 83.1 MB
Events in quadrant A4,176,106584,344
Events in quadrant B5,366,393535,270
Events in quadrant C4,479,456539,477
Events in quadrant D3,706,380538,700

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166701
B0202071
C0176593
D0153821

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62893655.803784%
B6290122519.475358%
C62894897.775481%
D62891532.432819%

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 7114 6290 203 203 2.85% 3.23%
B 7115 6291 439 439 6.17% 6.98%
C 7114 6290 365 365 5.13% 5.80%
D 7114 6290 74 74 1.04% 1.18%

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 15 233 1309449 7624.91 686 668 171.6
A 13 248 53024 305.02 686 668 171.6
A 10 17 38127 218.23 686 668 171.6
B 6 255 2189181 16536.74 613 591 132.3
B 0 171 328409 2476.96 613 591 132.3
B 8 234 149761 1127.11 613 591 132.3
C 14 245 880183 4839.35 659 653 181.7
C 15 1 500114 2748.13 659 653 181.7
C 12 252 176426 967.14 659 653 181.7
D 2 249 238146 1228.5 678 646 193.3
D 2 207 234216 1208.17 678 646 193.3
D 3 12 179671 926.03 678 646 193.3

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