ASTROSAT CZTI

Data Quality Report

Orbit 54985

Creation date: 2025-11-27T13:25:51.369088
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_014T01_9000006528_54985cztM0_level2.fits modeM0/AS1A14_014T01_9000006528_54985cztM0_level2_quad_clean.evt
Size (bytes)868,504,32091,166,400
Size828.3 MB 86.9 MB
Events in quadrant A5,512,674689,913
Events in quadrant B3,812,437800,049
Events in quadrant C3,948,710710,382
Events in quadrant D18,262,14512,017

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0221060
B0171000
C0174700
D0596810

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78786287.971566%
B78791251.586496%
C7879510.647290%
D7879776298.515040%

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 7878 7878 453 453 5.75% 5.75%
B 7879 7879 39 39 0.49% 0.49%
C 7879 7879 38 38 0.48% 0.48%
D 7878 7878 6562 6562 83.30% 83.30%

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 15 32 1856484 8813.58 854 832 210.5
A 0 8 225570 1067.41 854 832 210.5
A 5 241 36779 170.73 854 832 210.5
B 5 236 110007 585.52 863 827 186.5
B 5 185 54751 289.19 863 827 186.5
B 7 252 42010 220.86 863 827 186.5
C 6 223 167913 710.63 858 849 235.1
C 5 250 95474 402.5 858 849 235.1
C 12 252 81157 341.6 858 849 235.1
D 15 94 17184283 397211.08 146 139 43.3
D 2 249 97587 2252.51 146 139 43.3
D 6 46 82559 1905.14 146 139 43.3

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