ASTROSAT CZTI

Data Quality Report

Orbit 40546

Creation date: 2024-06-27T22:17:23.669580
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/AS1A12_011T26_9000005548_40546cztM0_level2.fits modeM0/AS1A12_011T26_9000005548_40546cztM0_level2_quad_clean.evt
Size (bytes)320,175,36087,431,040
Size305.3 MB 83.4 MB
Events in quadrant A2,926,832606,587
Events in quadrant B2,397,143624,711
Events in quadrant C2,586,552586,826
Events in quadrant D3,541,132470,168

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117503
B0103032
C0108202
D0141722

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5127100.195046%
B512770.136532%
C5127120.234055%
D512779915.584162%

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 7099 5128 2 2 0.03% 0.04%
B 7099 5128 0 0 0.00% 0.00%
C 7099 5128 6 6 0.08% 0.12%
D 7099 5127 139 139 1.96% 2.71%

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 455275 3824.29 585 575 118.9
A 12 189 155003 1298.83 585 575 118.9
A 6 10 34575 285.96 585 575 118.9
B 3 112 86024 768.47 579 564 111.2
B 0 230 27511 242.31 579 564 111.2
B 12 111 13971 120.56 579 564 111.2
C 15 214 227904 1736.55 563 567 130.9
C 14 254 103155 783.63 563 567 130.9
C 0 10 26332 196.81 563 567 130.9
D 12 227 785762 6106.9 519 504 128.6
D 2 250 296335 2300.66 519 504 128.6
D 12 191 174626 1354.14 519 504 128.6

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