ASTROSAT CZTI

Data Quality Report

Orbit 04949

Creation date: 2024-06-27T14:49:13.186491
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/AS1G05_157T01_9000000626_04949cztM0_level2.evt modeM0/AS1G05_157T01_9000000626_04949cztM0_level2_quad_clean.evt
Size (bytes)449,467,20095,569,920
Size428.6 MB 91.1 MB
Events in quadrant A3,209,696632,320
Events in quadrant B3,274,843630,249
Events in quadrant C2,780,202627,798
Events in quadrant D3,948,234593,343

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132802
B0134651
C0121791
D0156741

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58801342.278912%
B58801212.057823%
C5880631.071429%
D58802794.744898%

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 7160 5880 25 25 0.35% 0.43%
B 7160 5880 36 36 0.50% 0.61%
C 7160 5880 0 0 0.00% 0.00%
D 7160 5880 181 181 2.53% 3.08%

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 31 189986 1263.94 740 726 149.7
A 8 15 91685 607.45 740 726 149.7
A 0 50 77070 509.85 740 726 149.7
B 10 16 225729 1620.47 737 722 138.9
B 4 80 69896 498.18 737 722 138.9
B 15 204 62996 448.49 737 722 138.9
C 13 61 5859 31.81 709 713 161.7
C 14 67 4557 23.76 709 713 161.7
C 1 16 3389 16.54 709 713 161.7
D 2 33 394468 2296.98 708 686 171.4
D 2 234 253276 1473.39 708 686 171.4
D 12 233 137574 798.48 708 686 171.4

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