ASTROSAT CZTI

Data Quality Report

Orbit 54506

Creation date: 2025-10-26T11:25:21.662836
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_54506cztM0_level2.fits modeM0/AS1A14_127T09_9000006520_54506cztM0_level2_quad_clean.evt
Size (bytes)463,694,400114,799,680
Size442.2 MB 109.5 MB
Events in quadrant A3,597,763754,681
Events in quadrant B4,041,706806,122
Events in quadrant C4,864,430686,675
Events in quadrant D4,036,842671,133

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167480
B0179660
C0205290
D0178030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8020330.411471%
B8020901.122195%
C80203874.825436%
D8020770.960100%

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 8020 8020 20 20 0.25% 0.25%
B 8020 8020 14 14 0.17% 0.17%
C 8020 8020 279 279 3.48% 3.48%
D 8020 8020 52 52 0.65% 0.65%

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 0 8 101641 470.12 868 844 214.4
A 4 3 40087 183.03 868 844 214.4
A 11 3 36794 167.67 868 844 214.4
B 5 172 377481 2035.28 857 823 185.1
B 0 213 105237 564.2 857 823 185.1
B 5 185 66629 355.58 857 823 185.1
C 15 147 745047 3304.76 821 814 225.2
C 4 5 213116 942.73 821 814 225.2
C 10 22 203890 901.76 821 814 225.2
D 2 172 223124 930.81 835 796 238.9
D 3 12 185397 772.86 835 796 238.9
D 10 181 103545 430.18 835 796 238.9

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