ASTROSAT CZTI

Data Quality Report

Orbit 53881

Creation date: 2025-09-13T14:05:39.761247
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_057T04_9000006508_53881cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53881cztM0_level2_quad_clean.evt
Size (bytes)893,324,16090,126,720
Size851.9 MB 86.0 MB
Events in quadrant A5,199,991636,761
Events in quadrant B4,039,987729,227
Events in quadrant C9,626,022540,980
Events in quadrant D13,633,248309,665

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0206720
B0172170
C0336870
D0455560

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73496779.212138%
B73482263.075667%
C7348174923.802395%
D7349404955.095931%

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 7349 7349 546 546 7.43% 7.43%
B 7348 7348 122 122 1.66% 1.66%
C 7348 7348 1380 1380 18.78% 18.78%
D 7349 7349 3561 3561 48.46% 48.46%

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 15 174 1795581 9432.56 769 748 190.3
A 3 62 309858 1624.5 769 748 190.3
A 10 253 48824 252.66 769 748 190.3
B 0 213 444439 2618.77 785 756 169.4
B 5 185 224718 1321.9 785 756 169.4
B 7 129 58702 342.02 785 756 169.4
C 15 209 2844447 14801.84 703 695 192.1
C 15 224 2385605 12413.55 703 695 192.1
C 15 158 522310 2715.03 703 695 192.1
D 8 176 9865295 63675.78 542 516 154.9
D 6 239 864002 5573.68 542 516 154.9
D 2 172 376585 2427.47 542 516 154.9

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