ASTROSAT CZTI

Data Quality Report

Orbit 50211

Creation date: 2025-01-09T12:50:09.064321
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/AS1C09_003T01_9000006442_50211cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50211cztM0_level2_quad_clean.evt
Size (bytes)3,813,220,800146,027,520
Size3.6 GB 139.3 MB
Events in quadrant A35,847,670772,488
Events in quadrant B17,910,4511,703,954
Events in quadrant C41,564,886401,567
Events in quadrant D44,370,164225,789

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01196523
B0665123
C01364193
D01447949

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03880
B03880
C03880
D03880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A190871118858.615812%
B19087225411.809085%
C190871499878.577042%
D190861664487.205281%

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 19852 19088 10233 10233 51.55% 53.61%
B 19852 19089 1474 1474 7.42% 7.72%
C 19852 19088 13699 13699 69.01% 71.77%
D 19851 19086 15638 15638 78.78% 81.93%

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 0 98 19269037 49192.48 1506 1460 391.7
A 4 76 3379944 8625.68 1506 1460 391.7
A 8 249 1581182 4033.22 1506 1460 391.7
B 4 206 6508886 16077.6 1931 1867 404.7
B 3 249 889714 2193.7 1931 1867 404.7
B 10 128 849808 2095.1 1931 1867 404.7
C 4 111 13943266 45636.36 1025 1012 305.5
C 15 197 13508064 44211.84 1025 1012 305.5
C 13 250 2451600 8021.37 1025 1012 305.5
D 7 61 19550548 70548.74 822 780 277.1
D 15 108 5707562 20593.91 822 780 277.1
D 15 168 4059931 14648.15 822 780 277.1

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