ASTROSAT CZTI

Data Quality Report

Orbit 44853

Creation date: 2024-06-27T23:07:14.668370
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/AS1A13_017T01_9000006028_44853cztM0_level2.fits modeM0/AS1A13_017T01_9000006028_44853cztM0_level2_quad_clean.evt
Size (bytes)496,100,160112,870,080
Size473.1 MB 107.6 MB
Events in quadrant A5,526,573745,494
Events in quadrant B3,341,019790,536
Events in quadrant C3,233,030760,966
Events in quadrant D5,735,035646,722

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0221102
B0147752
C0144892
D0219272

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68083104.553467%
B6807670.984281%
C6807540.793301%
D68075267.727340%

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 7733 6809 53 53 0.69% 0.78%
B 7732 6808 3 3 0.04% 0.04%
C 7732 6808 13 13 0.17% 0.19%
D 7732 6808 378 378 4.89% 5.55%

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 10 83 2265912 14192.47 767 750 159.6
A 13 248 266324 1663.97 767 750 159.6
A 10 255 14160 84.02 767 750 159.6
B 0 155 95331 614.17 778 755 154.0
B 3 112 42053 268.19 778 755 154.0
B 5 255 33354 211.7 778 755 154.0
C 12 2 158339 877.45 768 773 179.6
C 3 233 25772 139.21 768 773 179.6
C 1 3 24764 133.6 768 773 179.6
D 13 174 1245870 6658.81 740 716 187.0
D 5 235 350221 1869.08 740 716 187.0
D 2 249 276706 1475.93 740 716 187.0

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