ASTROSAT CZTI

Data Quality Report

Orbit 53064

Creation date: 2025-07-20T13:21:33.065710
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_011T07_9000006488_53064cztM0_level2.fits modeM0/AS1C09_011T07_9000006488_53064cztM0_level2_quad_clean.evt
Size (bytes)573,503,04079,911,360
Size546.9 MB 76.2 MB
Events in quadrant A5,249,303536,744
Events in quadrant B2,750,987610,506
Events in quadrant C6,894,640456,272
Events in quadrant D5,878,165404,470

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01971765
B01263138
C024777162
D02194655

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58824878.279497%
B5878761.292957%
C5872116819.891008%
D5878126421.503913%

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 7031 5903 324 324 4.61% 5.49%
B 7032 5899 10 10 0.14% 0.17%
C 7032 5903 966 966 13.74% 16.36%
D 7032 5897 1113 1113 15.83% 18.87%

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 9 191 1609372 10796.91 594 578 149.0
A 7 206 679205 4554.39 594 578 149.0
A 0 8 134712 900.2 594 578 149.0
B 4 81 145230 1121.59 605 583 129.0
B 1 255 71998 553.75 605 583 129.0
B 10 254 32088 244.29 605 583 129.0
C 15 224 2844816 18821.65 539 533 151.1
C 1 241 922473 6100.81 539 533 151.1
C 13 3 230418 1521.23 539 533 151.1
D 8 176 2351076 16736.8 483 460 140.4
D 2 62 601502 4279.53 483 460 140.4
D 12 17 491058 3493.14 483 460 140.4

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