ASTROSAT CZTI

Data Quality Report

Orbit 16293

Creation date: 2024-06-27T17:20:40.897834
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/AS1A05_225T04_9000002400_16293cztM0_level2.evt modeM0/AS1A05_225T04_9000002400_16293cztM0_level2_quad_clean.evt
Size (bytes)602,061,12097,027,200
Size574.2 MB 92.5 MB
Events in quadrant A4,331,098596,615
Events in quadrant B4,375,316603,405
Events in quadrant C4,792,820579,885
Events in quadrant D4,164,710574,951

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183612
B0184362
C0197452
D0181502

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A83911511.799547%
B8391981.167918%
C83912012.395424%
D8391730.869980%

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 9917 8394 66 66 0.67% 0.79%
B 9917 8394 11 11 0.11% 0.13%
C 9917 8394 4 4 0.04% 0.05%
D 9917 8394 29 29 0.29% 0.35%

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 15 174 362417 1734.4 1024 999 208.4
A 13 248 23972 110.24 1024 999 208.4
A 0 226 8851 37.68 1024 999 208.4
B 0 198 106061 533.26 1029 1004 197.0
B 0 189 66423 332.06 1029 1004 197.0
B 15 35 36881 182.11 1029 1004 197.0
C 3 233 794704 3447.35 978 982 230.2
C 14 238 150011 647.27 978 982 230.2
C 0 207 29947 125.8 978 982 230.2
D 10 70 191613 774.39 998 965 246.2
D 1 52 81646 327.72 998 965 246.2
D 12 110 58221 232.57 998 965 246.2

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