ASTROSAT CZTI

Data Quality Report

Orbit 54576

Creation date: 2025-10-30T08:45:24.784911
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_127T09_9000006520_54576cztM0_level2.fits modeM0/AS1A14_127T09_9000006520_54576cztM0_level2_quad_clean.evt
Size (bytes)453,317,76097,899,840
Size432.3 MB 93.4 MB
Events in quadrant A4,051,378636,665
Events in quadrant B4,341,712676,784
Events in quadrant C3,676,899614,236
Events in quadrant D4,188,722569,080

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168492
B0178812
C0160092
D0173032

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67083294.904592%
B67083455.143113%
C67081712.549195%
D67072313.444163%

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 7718 6709 226 226 2.93% 3.37%
B 7718 6708 161 161 2.09% 2.40%
C 7718 6709 128 128 1.66% 1.91%
D 7717 6708 183 183 2.37% 2.73%

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 11 3 979224 5418.56 715 697 180.6
A 3 14 91632 503.55 715 697 180.6
A 14 235 44872 244.62 715 697 180.6
B 0 173 732785 4818.16 708 684 151.9
B 5 172 166109 1088.71 708 684 151.9
B 10 14 120693 789.81 708 684 151.9
C 13 3 681416 3461.82 706 700 196.6
C 15 230 48235 241.74 706 700 196.6
C 15 157 45301 226.82 706 700 196.6
D 3 12 609454 3083.42 694 663 197.4
D 15 94 415267 2099.9 694 663 197.4
D 2 37 91219 458.65 694 663 197.4

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