ASTROSAT CZTI

Data Quality Report

Orbit 41692

Creation date: 2024-06-27T22:31:39.581188
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_035T02_9000005690_41692cztM0_level2.fits modeM0/AS1A12_035T02_9000005690_41692cztM0_level2_quad_clean.evt
Size (bytes)371,249,28092,352,960
Size354.1 MB 88.1 MB
Events in quadrant A2,938,891650,909
Events in quadrant B2,667,193661,907
Events in quadrant C2,914,218598,395
Events in quadrant D4,824,266526,776

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117703
B0111092
C0116272
D0177652

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5112200.391236%
B5112250.489045%
C51121803.521127%
D511261812.089202%

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 7235 5113 5 5 0.07% 0.10%
B 7235 5113 9 9 0.12% 0.18%
C 7235 5113 170 170 2.35% 3.32%
D 7235 5113 574 574 7.93% 11.23%

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 546796 4450.32 614 605 122.7
A 13 254 7832 58.89 614 605 122.7
A 3 137 6490 47.95 614 605 122.7
B 0 190 134627 1169.74 606 592 114.6
B 5 255 55710 481.02 606 592 114.6
B 0 245 39521 339.74 606 592 114.6
C 0 10 436933 3252.94 577 582 134.1
C 15 214 207056 1539.24 577 582 134.1
C 15 111 13111 93.4 577 582 134.1
D 2 120 1448923 10431.77 564 547 138.8
D 2 249 912158 6565.78 564 547 138.8
D 13 249 107589 770.96 564 547 138.8

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