ASTROSAT CZTI

Data Quality Report

Orbit 33640

Creation date: 2024-06-27T20:50:57.956521
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/AS1T04_076T01_9000004810_33640cztM0_level2.evt modeM0/AS1T04_076T01_9000004810_33640cztM0_level2_quad_clean.evt
Size (bytes)466,191,36077,788,800
Size444.6 MB 74.2 MB
Events in quadrant A2,605,411503,831
Events in quadrant B4,043,183509,807
Events in quadrant C3,355,183511,578
Events in quadrant D3,776,913480,837

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107703
B0152082
C0134992
D0149342

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A498320.040136%
B49834899.813365%
C49831002.006823%
D49831132.267710%

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 7075 4984 0 0 0.00% 0.00%
B 7075 4984 375 375 5.30% 7.52%
C 7075 4984 83 83 1.17% 1.67%
D 7075 4984 113 113 1.60% 2.27%

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 13 6 9286 64.8 671 662 133.1
A 13 254 7385 50.52 671 662 133.1
A 10 83 6993 47.57 671 662 133.1
B 5 172 1362936 11373.5 646 633 119.8
B 0 213 34152 279.84 646 633 119.8
B 4 81 25252 205.54 646 633 119.8
C 15 214 230423 1532.85 658 666 149.9
C 0 10 229447 1526.34 658 666 149.9
C 0 239 153761 1021.39 658 666 149.9
D 8 195 461197 2721.87 651 639 169.2
D 2 250 244691 1442.33 651 639 169.2
D 13 249 186285 1097.16 651 639 169.2

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