ASTROSAT CZTI

Data Quality Report

Orbit 08940

Creation date: 2024-06-27T15:39:14.231890
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/AS1A03_092T01_9000001240_08940cztM0_level2.evt modeM0/AS1A03_092T01_9000001240_08940cztM0_level2_quad_clean.evt
Size (bytes)2,493,380,160421,159,680
Size2.3 GB 401.6 MB
Events in quadrant A21,653,0982,598,127
Events in quadrant B16,426,1462,659,480
Events in quadrant C15,413,7322,599,772
Events in quadrant D19,658,2702,495,292

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07140
B07140
C07140
D07140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0871447
B0723286
C0711198
D0826226

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A349758562.447462%
B349751720.491780%
C34974840.240178%
D349759552.730522%

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 38765 34981 635 635 1.64% 1.82%
B 38765 34981 16 16 0.04% 0.05%
C 38765 34981 9 9 0.02% 0.03%
D 38765 34981 820 820 2.12% 2.34%

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 8 5 3369386 4160.17 4015 3929 809.0
A 0 128 2323489 2867.29 4015 3929 809.0
A 5 16 319355 389.91 4015 3929 809.0
B 0 219 114661 144.69 4069 3974 765.0
B 0 168 95183 119.23 4069 3974 765.0
B 12 111 82023 102.03 4069 3974 765.0
C 14 234 80233 84.87 3907 3925 899.1
C 5 128 52567 54.1 3907 3925 899.1
C 1 3 39955 40.07 3907 3925 899.1
D 1 52 1770796 1717.25 3852 3765 1029.0
D 12 233 1383779 1341.13 3852 3765 1029.0
D 8 195 646589 624.71 3852 3765 1029.0

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