ASTROSAT CZTI

Data Quality Report

Orbit 10499

Creation date: 2024-06-27T16:00:12.271874
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/AS1G07_057T01_9000001520_10499cztM0_level2.evt modeM0/AS1G07_057T01_9000001520_10499cztM0_level2_quad_clean.evt
Size (bytes)380,283,84046,494,720
Size362.7 MB 44.3 MB
Events in quadrant A2,616,053253,273
Events in quadrant B2,711,853261,021
Events in quadrant C2,477,359261,090
Events in quadrant D3,347,344258,855

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310182
B0310199
C0307187
D0305183

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A073
B073
C073
D062

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03041519398
B03668625527
C03135620400
D03749024013

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52991372.585393%
B49981513.021208%
C52791112.102671%
D56341562.768903%

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 8263 6447 0 0 0.00% 0.00%
B 8263 6198 1 1 0.01% 0.02%
C 8263 6442 0 0 0.00% 0.00%
D 8263 6434 3 3 0.04% 0.05%

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 3 80 72132 521.47 655 640 137.1
A 5 16 9775 66.63 655 640 137.1
A 0 226 6014 39.2 655 640 137.1
B 4 239 199231 1639.37 617 602 121.2
B 0 214 45845 373.41 617 602 121.2
B 11 51 36680 297.77 617 602 121.2
C 14 234 7964 48.72 632 636 150.4
C 13 61 4772 27.5 632 636 150.4
C 1 3 2915 15.15 632 636 150.4
D 1 20 296447 1813.01 670 653 163.2
D 2 16 187745 1146.74 670 653 163.2
D 1 52 147620 900.81 670 653 163.2

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