ASTROSAT CZTI

Data Quality Report

Orbit 57934

Creation date: 2026-06-13T07:09:20.440702
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_125T11_9000006582_57934cztM0_level2.fits modeM0/AS1A14_125T11_9000006582_57934cztM0_level2_quad_clean.evt
Size (bytes)408,340,800101,710,080
Size389.4 MB 97.0 MB
Events in quadrant A3,150,146664,665
Events in quadrant B3,582,567694,908
Events in quadrant C4,074,561617,845
Events in quadrant D3,737,185592,008

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150572
B0160542
C0175632
D0160952

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7334310.422689%
B73351522.072256%
C73351482.017723%
D7334690.940824%

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 9176 7518 2 2 0.02% 0.03%
B 9178 7520 55 55 0.60% 0.73%
C 9178 7520 100 100 1.09% 1.33%
D 9177 7519 38 38 0.41% 0.51%

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 3 245 52726 269.26 786 764 193.0
A 3 14 28754 145.04 786 764 193.0
A 13 254 10331 49.57 786 764 193.0
B 3 238 126155 759.39 771 740 165.2
B 4 201 117359 706.13 771 740 165.2
B 0 63 85391 512.56 771 740 165.2
C 15 224 866125 4252.64 750 741 203.5
C 1 16 97258 474.3 750 741 203.5
C 6 223 85710 417.55 750 741 203.5
D 2 62 349641 1640.78 752 715 212.7
D 13 138 109373 510.95 752 715 212.7
D 2 31 95902 447.6 752 715 212.7

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