ASTROSAT CZTI

Data Quality Report

Orbit 52269

Creation date: 2025-07-21T21:02:23.122834
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/AS1C09_011T05_9000006474_52269cztM0_level2.fits modeM0/AS1C09_011T05_9000006474_52269cztM0_level2_quad_clean.evt
Size (bytes)833,402,88081,011,520
Size794.8 MB 77.3 MB
Events in quadrant A4,579,471636,985
Events in quadrant B6,781,882645,460
Events in quadrant C14,732,74695,124
Events in quadrant D4,206,376582,808

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0184590
B0250280
C0485750
D0174830

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70713364.751803%
B707186612.247207%
C7071616787.215387%
D70711622.291048%

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 7071 7071 277 277 3.92% 3.92%
B 7071 7071 506 506 7.16% 7.16%
C 7071 7071 4596 4596 65.00% 65.00%
D 7071 7071 99 99 1.40% 1.40%

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 4 249 1113715 6100.36 728 711 182.4
A 3 130 95129 517.5 728 711 182.4
A 3 7 90707 493.27 728 711 182.4
B 12 32 1049157 7012.04 701 675 149.5
B 4 171 635945 4248.56 701 675 149.5
B 5 32 586083 3915.09 701 675 149.5
C 15 158 8611087 108163.38 281 277 79.6
C 15 178 2043805 25669.47 281 277 79.6
C 15 224 1797286 22572.86 281 277 79.6
D 8 176 273284 1342.55 713 683 203.0
D 11 176 187316 919.16 713 683 203.0
D 7 60 161258 790.83 713 683 203.0

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