ASTROSAT CZTI

Data Quality Report

Orbit 12743

Creation date: 2024-06-27T16:31:50.282678
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/AS1G08_021T01_9000001880_12743cztM0_level2.evt modeM0/AS1G08_021T01_9000001880_12743cztM0_level2_quad_clean.evt
Size (bytes)1,097,893,440242,677,440
Size1.0 GB 231.4 MB
Events in quadrant A6,871,1711,623,932
Events in quadrant B10,190,4111,581,468
Events in quadrant C6,564,4791,590,249
Events in quadrant D8,622,2011,532,592

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0305985
B0402493
C0301903
D0364033

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03000
B03000
C03000
D03000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A148091410.952124%
B1480910537.110541%
C148091020.688770%
D148094122.782092%

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 50479 14813 1 1 0.00% 0.01%
B 50479 14813 704 704 1.39% 4.75%
C 50479 14813 0 0 0.00% 0.00%
D 50479 14813 245 245 0.49% 1.65%

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 8 15 71107 200.34 1740 1700 346.5
A 7 16 56156 157.18 1740 1700 346.5
A 12 189 48735 135.76 1740 1700 346.5
B 4 239 3038785 9642.5 1702 1663 315.0
B 0 85 147340 462.51 1702 1663 315.0
B 3 64 76271 236.87 1702 1663 315.0
C 3 233 13669 31.19 1678 1684 384.2
C 13 61 12462 28.05 1678 1684 384.2
C 8 128 8507 17.76 1678 1684 384.2
D 1 52 2042048 5244.98 1646 1603 389.0
D 10 199 146825 373.29 1646 1603 389.0
D 2 136 74048 186.22 1646 1603 389.0

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