ASTROSAT CZTI

Data Quality Report

Orbit 19961

Creation date: 2024-06-27T18:09:25.359954
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/AS1T03_036T01_9000002972_19961cztM0_level2.evt modeM0/AS1T03_036T01_9000002972_19961cztM0_level2_quad_clean.evt
Size (bytes)559,416,960100,932,480
Size533.5 MB 96.3 MB
Events in quadrant A3,418,445697,638
Events in quadrant B3,813,909681,612
Events in quadrant C4,275,914635,354
Events in quadrant D5,008,215603,522

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141032
B0154882
C0171712
D0192054

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62791302.070393%
B62791812.882625%
C62791712.723364%
D62785759.158968%

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 7584 6279 26 26 0.34% 0.41%
B 7584 6279 69 69 0.91% 1.10%
C 7584 6279 5 5 0.07% 0.08%
D 7582 6277 541 541 7.14% 8.62%

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 14 238 144072 852.22 847 835 168.1
A 14 254 9609 52.2 847 835 168.1
A 0 226 7502 39.67 847 835 168.1
B 7 220 373496 2373.66 827 809 157.0
B 0 197 113286 716.37 827 809 157.0
B 0 190 29132 180.39 827 809 157.0
C 3 233 607711 3369.31 784 792 180.1
C 10 222 453084 2510.9 784 792 180.1
C 14 238 123178 679.43 784 792 180.1
D 7 38 1063434 5581.26 789 770 190.4
D 12 218 671381 3522.14 789 770 190.4
D 12 233 167881 877.69 789 770 190.4

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