ASTROSAT CZTI

Data Quality Report

Orbit 53752

Creation date: 2025-09-04T22:14:35.667680
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_022T04_9000006506_53752cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53752cztM0_level2_quad_clean.evt
Size (bytes)967,475,52085,798,080
Size922.7 MB 81.8 MB
Events in quadrant A14,406,098322,447
Events in quadrant B4,627,755720,311
Events in quadrant C10,714,765447,458
Events in quadrant D5,499,592598,474

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0478200
B0189260
C0369377
D0214486

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7309415256.806677%
B73092032.777398%
C7307255734.993842%
D73084185.719759%

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 7309 7309 4007 4007 54.82% 54.82%
B 7309 7309 155 155 2.12% 2.12%
C 7309 7308 2281 2281 31.21% 31.21%
D 7307 7307 407 407 5.57% 5.57%

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 11381962 76521.78 591 576 148.7
A 0 8 127791 855.32 591 576 148.7
A 4 249 113923 762.08 591 576 148.7
B 7 0 548851 3366.71 755 729 162.8
B 4 81 444339 2724.77 755 729 162.8
B 0 213 188068 1150.69 755 729 162.8
C 15 224 5283425 30427.21 628 624 173.6
C 1 241 2085417 12007.73 628 624 173.6
C 15 158 417583 2401.55 628 624 173.6
D 3 224 939692 4514.26 738 706 208.0
D 3 12 431363 2070.42 738 706 208.0
D 13 153 280731 1346.24 738 706 208.0

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