ASTROSAT CZTI

Data Quality Report

Orbit 55464

Creation date: 2025-12-29T02:45:18.392030
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_55464cztM0_level2.fits modeM0/AS1A14_099T01_9000006536_55464cztM0_level2_quad_clean.evt
Size (bytes)532,843,200104,722,560
Size508.2 MB 99.9 MB
Events in quadrant A5,950,333625,704
Events in quadrant B3,778,810751,816
Events in quadrant C3,582,301670,916
Events in quadrant D5,833,754603,864

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C051
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0231492
B0165762
C0165212
D0225732

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A744890912.204619%
B74481421.906552%
C74471091.463677%
D74475627.546663%

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 7688 7449 801 801 10.42% 10.75%
B 7688 7449 38 38 0.49% 0.51%
C 7687 7448 53 53 0.69% 0.71%
D 7687 7448 480 480 6.24% 6.44%

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 2523802 13468.14 759 739 187.3
A 7 14 256940 1367.6 759 739 187.3
A 4 3 63570 335.39 759 739 187.3
B 5 236 153297 899.27 795 766 169.6
B 0 171 143084 839.05 795 766 169.6
B 5 172 90341 528.1 795 766 169.6
C 13 3 305670 1419.96 788 779 214.7
C 9 38 115824 535.8 788 779 214.7
C 1 16 46467 212.78 788 779 214.7
D 11 129 1443257 6747.63 763 729 213.8
D 8 160 350461 1635.92 763 729 213.8
D 2 31 346845 1619.01 763 729 213.8

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