ASTROSAT CZTI

Data Quality Report

Orbit 59111

Creation date: 2026-08-31T11:18:35.041813
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_004T02_9000006600_59111cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59111cztM0_level2_quad_clean.evt
Size (bytes)709,799,04081,334,080
Size676.9 MB 77.6 MB
Events in quadrant A3,055,686628,852
Events in quadrant B3,530,165667,853
Events in quadrant C5,309,625574,789
Events in quadrant D13,865,040130,140

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140101
B0150091
C0203441
D0456711

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66101101.664145%
B66102133.222390%
C66094767.202300%
D6609505876.532002%

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 7320 6611 18 18 0.25% 0.27%
B 7320 6611 61 61 0.83% 0.92%
C 7319 6610 279 279 3.81% 4.22%
D 7319 6609 4611 4611 63.00% 69.77%

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 10 251 154280 854.39 731 711 179.7
A 3 14 16027 85.21 731 711 179.7
A 13 248 13704 72.29 731 711 179.7
B 4 236 266528 1713.05 721 692 155.2
B 4 158 106079 679.11 721 692 155.2
B 10 128 75391 481.36 721 692 155.2
C 3 233 1351061 7152.92 688 684 188.8
C 13 3 684113 3620.11 688 684 188.8
C 15 201 312357 1650.93 688 684 188.8
D 12 1 12478707 188277.38 225 214 66.3
D 6 239 182391 2748.71 225 214 66.3
D 12 110 176595 2661.26 225 214 66.3

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

TCT plots

Parameter TCT0 TCT_healed
Tct