ASTROSAT CZTI

Data Quality Report

Orbit 53669

Creation date: 2025-08-30T08:24:58.333812
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_022T05_9000006504_53669cztM0_level2.fits modeM0/AS1A14_022T05_9000006504_53669cztM0_level2_quad_clean.evt
Size (bytes)1,052,297,28066,528,000
Size1003.5 MB 63.4 MB
Events in quadrant A14,746,391181,919
Events in quadrant B3,914,885646,935
Events in quadrant C12,134,575290,056
Events in quadrant D7,650,140436,614

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0483351
B0161521
C0405811
D0272691

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6565492675.034273%
B65641572.391834%
C6564368056.063376%
D6564154523.537477%

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 7445 6565 4718 4718 63.37% 71.87%
B 7444 6565 75 75 1.01% 1.14%
C 7444 6564 3189 3189 42.84% 48.58%
D 7443 6564 1321 1321 17.75% 20.12%

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 63 9650060 88488.78 436 427 109.0
A 3 78 2786517 25548.92 436 427 109.0
A 15 174 271480 2485.6 436 427 109.0
B 10 254 382258 2582.25 689 666 147.8
B 5 185 240462 1622.71 689 666 147.8
B 5 172 219381 1480.05 689 666 147.8
C 15 224 5925334 45758.98 462 460 129.5
C 1 241 2734616 21116.43 462 460 129.5
C 13 3 672330 5188.99 462 460 129.5
D 8 176 3456776 21206.85 562 535 163.0
D 2 37 503365 3085.27 562 535 163.0
D 13 153 265102 1623.33 562 535 163.0

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