ASTROSAT CZTI

Data Quality Report

Orbit 21025

Creation date: 2024-06-27T18:22:37.976404
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/AS1A05_075T06_9000003104_21025cztM0_level2.evt modeM0/AS1A05_075T06_9000003104_21025cztM0_level2_quad_clean.evt
Size (bytes)1,315,664,640243,878,400
Size1.2 GB 232.6 MB
Events in quadrant A8,452,7621,579,301
Events in quadrant B9,312,2651,581,090
Events in quadrant C9,870,2301,492,799
Events in quadrant D10,967,9241,467,217

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03740
B03740
C03740
D03740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0375703
B0396383
C0414803
D0449363

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A183661420.773168%
B183672021.099799%
C183676723.658736%
D183676623.604290%

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 20231 18369 4 4 0.02% 0.02%
B 20232 18370 34 34 0.17% 0.19%
C 20232 18370 351 351 1.73% 1.91%
D 20232 18369 408 408 2.02% 2.22%

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 15 192 54579 118.98 2173 2121 440.9
A 13 254 20469 41.61 2173 2121 440.9
A 0 226 19027 38.34 2173 2121 440.9
B 7 220 266588 646.15 2165 2109 409.3
B 0 189 129700 311.72 2165 2109 409.3
B 0 229 62252 146.93 2165 2109 409.3
C 9 54 1434591 2964.93 2070 2082 483.2
C 14 238 320979 660.03 2070 2082 483.2
C 10 91 39091 76.6 2070 2082 483.2
D 1 52 1966727 3875.93 2099 2039 506.9
D 1 20 225617 441.07 2099 2039 506.9
D 7 238 182418 355.85 2099 2039 506.9

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