ASTROSAT CZTI

Data Quality Report

Orbit 55460

Creation date: 2025-12-28T20:15:13.435878
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_099T01_9000006536_55460cztM0_level2.fits modeM0/AS1A14_099T01_9000006536_55460cztM0_level2_quad_clean.evt
Size (bytes)445,916,16096,520,320
Size425.3 MB 92.0 MB
Events in quadrant A4,155,766630,092
Events in quadrant B3,494,080680,448
Events in quadrant C3,720,755602,446
Events in quadrant D4,632,231558,692

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168872
B0150702
C0158282
D0181952

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64704066.275116%
B64703214.961360%
C64702824.358578%
D64704837.465224%

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 7605 6470 234 234 3.08% 3.62%
B 7605 6470 188 188 2.47% 2.91%
C 7605 6470 170 170 2.24% 2.63%
D 7605 6470 362 362 4.76% 5.60%

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 78 1334390 7570.11 712 694 176.2
A 13 254 13848 74.66 712 694 176.2
A 4 3 13773 74.24 712 694 176.2
B 5 236 422088 2858.82 696 669 147.4
B 10 247 156285 1055.67 696 669 147.4
B 0 171 122538 826.73 696 669 147.4
C 13 3 731562 3901.02 686 679 187.4
C 1 16 128411 681.76 686 679 187.4
C 12 252 104434 553.78 686 679 187.4
D 8 160 734123 3839.32 681 650 191.0
D 9 65 357467 1867.74 681 650 191.0
D 2 31 209844 1095.01 681 650 191.0

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