ASTROSAT CZTI

Data Quality Report

Orbit 59340

Creation date: 2026-09-15T20:20:24.572738
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_033T01_9000006608_59340cztM0_level2.fits modeM0/AS1A14_033T01_9000006608_59340cztM0_level2_quad_clean.evt
Size (bytes)460,578,240103,282,560
Size439.2 MB 98.5 MB
Events in quadrant A3,181,313683,101
Events in quadrant B3,801,339727,219
Events in quadrant C5,236,687647,174
Events in quadrant D4,314,186607,385

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140032
B0156422
C0198342
D0171452

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66381842.771919%
B66393054.594065%
C66392323.494502%
D66392193.298690%

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 8783 6640 16 16 0.18% 0.24%
B 8784 6640 91 91 1.04% 1.37%
C 8784 6641 63 63 0.72% 0.95%
D 8784 6641 64 64 0.73% 0.96%

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 69853 364.34 786 767 189.6
A 6 226 24128 123.2 786 767 189.6
A 0 24 16841 84.77 786 767 189.6
B 4 236 344056 2111.71 768 741 162.6
B 5 236 86696 528.7 768 741 162.6
B 4 171 82978 505.83 768 741 162.6
C 1 16 1841613 8943.66 759 755 205.8
C 3 233 110262 532.03 759 755 205.8
C 14 96 109873 530.14 759 755 205.8
D 11 129 895788 4160.36 766 732 215.1
D 12 110 157460 728.5 766 732 215.1
D 5 32 75426 347.19 766 732 215.1

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