ASTROSAT CZTI

Data Quality Report

Orbit 57089

Creation date: 2026-04-17T17:43:48.368973
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_083T10_9000006566_57089cztM0_level2.fits modeM0/AS1A14_083T10_9000006566_57089cztM0_level2_quad_clean.evt
Size (bytes)532,615,68095,817,600
Size507.9 MB 91.4 MB
Events in quadrant A3,116,307658,060
Events in quadrant B3,535,987689,812
Events in quadrant C4,507,259613,420
Events in quadrant D8,051,199486,571

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139432
B0148842
C0177862
D0284252

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6509711.090797%
B65082473.795329%
C65082794.287031%
D6508125919.345421%

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 7660 6511 26 26 0.34% 0.40%
B 7659 6510 85 85 1.11% 1.31%
C 7659 6510 194 194 2.53% 2.98%
D 7659 6510 1141 1141 14.90% 17.53%

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 0 12 172853 959.32 727 709 179.4
A 13 248 51084 280.73 727 709 179.4
A 3 14 27498 149.29 727 709 179.4
B 10 16 473514 3166.42 705 680 149.3
B 4 171 76434 507.3 705 680 149.3
B 0 63 75704 502.41 705 680 149.3
C 15 198 541527 2826.88 705 700 191.3
C 14 245 425662 2221.26 705 700 191.3
C 12 252 237072 1235.51 705 700 191.3
D 15 142 3687847 20575.89 636 605 179.2
D 12 33 1251659 6981.25 636 605 179.2
D 15 234 240643 1339.48 636 605 179.2

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