ASTROSAT CZTI

Data Quality Report

Orbit 54133

Creation date: 2025-09-30T14:36:50.119473
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_012T01_9000006512_54133cztM0_level2.fits modeM0/AS1A14_012T01_9000006512_54133cztM0_level2_quad_clean.evt
Size (bytes)1,828,068,480349,960,320
Size1.7 GB 333.7 MB
Events in quadrant A15,318,6492,259,290
Events in quadrant B14,806,6572,450,103
Events in quadrant C11,762,1762,253,319
Events in quadrant D23,843,1101,907,171

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05080
B05080
C05080
D05080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0643663
B0623643
C0543913
D0891303

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2507411134.438861%
B250759443.764706%
C250752430.969093%
D25075311312.414756%

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 26559 25075 889 889 3.35% 3.55%
B 26560 25075 418 418 1.57% 1.67%
C 26560 25079 160 160 0.60% 0.64%
D 26560 25078 2716 2716 10.23% 10.83%

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 7 158 3028385 4740.14 2585 2521 638.3
A 0 8 629395 982.02 2585 2521 638.3
A 15 174 583722 910.47 2585 2521 638.3
B 5 236 902088 1634.26 2585 2494 550.5
B 5 172 873322 1582.0 2585 2494 550.5
B 15 20 743923 1346.93 2585 2494 550.5
C 12 252 366704 521.08 2563 2536 698.9
C 13 3 263838 373.89 2563 2536 698.9
C 15 217 239273 338.74 2563 2536 698.9
D 8 176 5236525 7647.43 2404 2295 684.4
D 7 70 5069810 7403.85 2404 2295 684.4
D 12 153 671972 978.43 2404 2295 684.4

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