ASTROSAT CZTI

Data Quality Report

Orbit 20254

Creation date: 2024-06-27T18:13:05.334502
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_117T01_9000003002_20254cztM0_level2.evt modeM0/AS1A05_117T01_9000003002_20254cztM0_level2_quad_clean.evt
Size (bytes)561,931,20083,056,320
Size535.9 MB 79.2 MB
Events in quadrant A3,959,582508,632
Events in quadrant B4,189,223505,743
Events in quadrant C3,876,525486,242
Events in quadrant D4,476,022484,511

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165972
B0172422
C0162132
D0181782

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76142963.887576%
B76153013.952725%
C76152363.099146%
D76152653.479974%

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 8559 7616 14 14 0.16% 0.18%
B 8560 7617 23 23 0.27% 0.30%
C 8560 7617 0 0 0.00% 0.00%
D 8560 7617 120 120 1.40% 1.58%

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 14 111 106704 535.8 970 948 197.4
A 14 238 70840 354.1 970 948 197.4
A 4 2 34977 172.4 970 948 197.4
B 7 220 232436 1253.57 955 933 184.7
B 6 36 55923 297.77 955 933 184.7
B 15 222 30529 160.26 955 933 184.7
C 14 238 141038 638.41 924 930 219.5
C 3 233 60408 271.01 924 930 219.5
C 3 9 47280 211.19 924 930 219.5
D 7 238 470743 2009.74 947 918 233.8
D 2 16 110636 469.33 947 918 233.8
D 7 38 94665 401.01 947 918 233.8

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