ASTROSAT CZTI

Data Quality Report

Orbit 12697

Creation date: 2024-06-27T16:31:13.545706
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/AS1A04_174T01_9000001876_12697cztM0_level2.evt modeM0/AS1A04_174T01_9000001876_12697cztM0_level2_quad_clean.evt
Size (bytes)551,704,32098,922,240
Size526.1 MB 94.3 MB
Events in quadrant A3,261,876666,995
Events in quadrant B6,343,055546,536
Events in quadrant C3,306,556662,654
Events in quadrant D3,325,027634,952

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143062
B0234611
C0145011
D0147921

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6955270.388210%
B6955130118.705967%
C6955360.517613%
D6955290.416966%

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 7521 6957 0 0 0.00% 0.00%
B 7521 6957 1061 1061 14.11% 15.25%
C 7521 6957 8 8 0.11% 0.11%
D 7521 6957 14 14 0.19% 0.20%

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 12 189 21368 118.33 838 821 173.6
A 8 15 13932 75.51 838 821 173.6
A 0 226 7362 37.67 838 821 173.6
B 4 239 3199227 22545.2 742 726 141.9
B 3 209 92206 644.81 742 726 141.9
B 0 219 36673 253.38 742 726 141.9
C 15 208 117595 612.39 816 825 190.7
C 14 234 6018 27.23 816 825 190.7
C 13 61 6008 27.18 816 825 190.7
D 1 52 83414 389.47 803 788 212.1
D 8 195 47021 217.93 803 788 212.1
D 2 234 29937 137.4 803 788 212.1

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