ASTROSAT CZTI

Data Quality Report

Orbit 59278

Creation date: 2026-09-11T18:03:23.804746
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_021T06_9000006606_59278cztM0_level2.fits modeM0/AS1A14_021T06_9000006606_59278cztM0_level2_quad_clean.evt
Size (bytes)767,220,48078,462,720
Size731.7 MB 74.8 MB
Events in quadrant A3,726,539638,798
Events in quadrant B4,041,529693,612
Events in quadrant C6,651,097406,207
Events in quadrant D13,455,320166,453

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158501
B0166271
C0246041
D0445065

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67512043.021775%
B67522613.865521%
C6752241635.781991%
D6751521477.233003%

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 7591 6752 136 136 1.79% 2.01%
B 7592 6753 147 147 1.94% 2.18%
C 7592 6752 999 999 13.16% 14.80%
D 7591 6751 3975 3975 52.36% 58.88%

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 429352 2401.63 722 703 178.5
A 10 251 324236 1812.69 722 703 178.5
A 14 238 96351 535.9 722 703 178.5
B 5 185 465730 3039.01 716 691 153.0
B 10 31 314280 2049.29 716 691 153.0
B 10 247 160408 1043.74 716 691 153.0
C 15 198 4413239 30773.11 519 513 143.4
C 12 252 59310 410.03 519 513 143.4
C 14 254 58507 404.43 519 513 143.4
D 12 110 9737847 64530.34 520 494 150.9
D 2 62 392968 2600.96 520 494 150.9
D 11 129 381781 2526.82 520 494 150.9

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

TCT plots

Parameter TCT0 TCT_healed
Tct