ASTROSAT CZTI

Data Quality Report

Orbit 11486

Creation date: 2024-06-27T16:13:38.796939
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/AS1A04_107T01_9000001684_11486cztM0_level2.evt modeM0/AS1A04_107T01_9000001684_11486cztM0_level2_quad_clean.evt
Size (bytes)1,770,759,360215,691,840
Size1.6 GB 205.7 MB
Events in quadrant A18,740,2221,258,392
Events in quadrant B15,615,5471,284,670
Events in quadrant C8,303,9031,377,649
Events in quadrant D9,709,8021,323,669

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03800
B03800
C03800
D03800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0684485
B0588364
C0379224
D0412054

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18670299316.031066%
B18670234212.544189%
C18670730.391002%
D186702191.173005%

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 20461 18673 1840 1840 8.99% 9.85%
B 20461 18674 1478 1478 7.22% 7.91%
C 20461 18674 0 0 0.00% 0.00%
D 20461 18674 104 104 0.51% 0.56%

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 5 10127934 24413.81 2040 1996 414.8
A 15 223 287643 688.7 2040 1996 414.8
A 15 239 136984 325.46 2040 1996 414.8
B 4 81 2725046 6961.57 2077 2026 391.2
B 4 239 2121703 5419.08 2077 2026 391.2
B 3 64 2003158 5116.02 2077 2026 391.2
C 13 61 15491 27.11 2127 2140 492.5
C 12 4 14303 24.7 2127 2140 492.5
C 3 202 5108 6.03 2127 2140 492.5
D 1 52 759518 1492.74 2114 2057 507.4
D 2 120 290566 568.57 2114 2057 507.4
D 2 14 137930 267.77 2114 2057 507.4

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