ASTROSAT CZTI

Data Quality Report

Orbit 37099

Creation date: 2024-06-27T21:35:31.351432
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/AS1A09_138T04_9000005282_37099cztM0_level2.evt modeM0/AS1A09_138T04_9000005282_37099cztM0_level2_quad_clean.evt
Size (bytes)2,133,599,040315,999,360
Size2.0 GB 301.4 MB
Events in quadrant A15,012,3361,940,344
Events in quadrant B15,058,6911,957,142
Events in quadrant C14,247,7131,920,987
Events in quadrant D18,394,2761,811,899

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05760
B05760
C05760
D05760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0618297
B06302410
C0588906
D0734116

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0970
B0970
C0970
D0970

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A282232260.800765%
B282224721.672454%
C28223840.297630%
D282238432.986926%

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 37962 28229 165 165 0.43% 0.58%
B 37962 28229 324 324 0.85% 1.15%
C 37962 28229 71 71 0.19% 0.25%
D 37962 28229 809 809 2.13% 2.87%

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 1129616 1719.5 3312 3250 655.1
A 7 3 527919 800.95 3312 3250 655.1
A 15 237 332419 502.51 3312 3250 655.1
B 5 172 1097564 1768.6 3259 3175 618.8
B 5 255 329035 526.61 3259 3175 618.8
B 0 229 216339 344.49 3259 3175 618.8
C 15 214 1192242 1619.13 3194 3220 734.4
C 0 10 364368 491.79 3194 3220 734.4
C 0 207 160688 214.43 3194 3220 734.4
D 1 52 1492454 1926.81 3207 3122 773.0
D 1 47 1157279 1493.18 3207 3122 773.0
D 13 249 1025480 1322.67 3207 3122 773.0

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