ASTROSAT CZTI

Data Quality Report

Orbit 41377

Creation date: 2024-06-27T22:28:19.839609
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_035T01_9000005660_41377cztM0_level2.fits modeM0/AS1A12_035T01_9000005660_41377cztM0_level2_quad_clean.evt
Size (bytes)401,630,40091,033,920
Size383.0 MB 86.8 MB
Events in quadrant A3,032,890618,724
Events in quadrant B2,594,452634,501
Events in quadrant C3,160,046588,992
Events in quadrant D5,633,481513,484

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123393
B0117642
C0130262
D0206292

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A573490.156958%
B5734230.401116%
C57342163.767004%
D573470112.225323%

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 7287 5735 3 3 0.04% 0.05%
B 7287 5735 10 10 0.14% 0.17%
C 7287 5735 215 215 2.95% 3.75%
D 7287 5735 634 634 8.70% 11.05%

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 558409 4293.44 626 613 129.9
A 12 189 24967 187.46 626 613 129.9
A 13 248 20526 153.27 626 613 129.9
B 0 190 83104 683.22 620 602 120.8
B 5 255 39571 322.71 620 602 120.8
B 0 155 15749 125.44 620 602 120.8
C 0 10 586049 4091.37 598 602 143.1
C 15 214 239934 1672.56 598 602 143.1
C 13 61 3985 23.64 598 602 143.1
D 1 47 2214411 15511.72 584 568 142.7
D 1 52 726596 5087.06 584 568 142.7
D 13 249 123780 863.31 584 568 142.7

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