ASTROSAT CZTI

Data Quality Report

Orbit 35522

Creation date: 2022-04-24T05:58:29.092988
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/AS1A11_097T09_9000005086_35522cztM0_level2.evt modeM0/AS1A11_097T09_9000005086_35522cztM0_level2_quad_clean.evt
Size (bytes)392,158,08062,389,440
Size374.0 MB 59.5 MB
Events in quadrant A2,562,422393,055
Events in quadrant B2,620,286405,394
Events in quadrant C3,876,741375,559
Events in quadrant D2,486,164373,322

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105123
B0106652
C0147822
D0105172

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4872150.307882%
B4872220.451560%
C48721723.530378%
D4872230.472085%

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 6965 4873 9 9 0.13% 0.18%
B 6965 4873 11 11 0.16% 0.23%
C 6965 4873 172 172 2.47% 3.53%
D 6965 4873 12 12 0.17% 0.25%

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 127279 1049.1 602 593 120.8
A 9 143 59706 489.52 602 593 120.8
A 15 169 25711 208.0 602 593 120.8
B 5 200 159937 1395.36 605 591 114.2
B 5 172 33996 292.52 605 591 114.2
B 5 236 19655 166.94 605 591 114.2
C 0 239 738522 5565.27 578 583 132.6
C 0 10 523476 3943.47 578 583 132.6
C 15 214 202909 1525.87 578 583 132.6
D 8 195 105665 750.89 578 563 140.0
D 13 249 77599 550.38 578 563 140.0
D 2 250 24611 171.81 578 563 140.0

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