ASTROSAT CZTI

Data Quality Report

Orbit 27696

Creation date: 2024-06-27T19:43:15.181991
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/AS1T03_262T01_9000003988_27696cztM0_level2.evt modeM0/AS1T03_262T01_9000003988_27696cztM0_level2_quad_clean.evt
Size (bytes)674,988,480100,373,760
Size643.7 MB 95.7 MB
Events in quadrant A4,130,580638,354
Events in quadrant B4,867,019637,363
Events in quadrant C4,302,245624,187
Events in quadrant D6,555,433538,094

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179230
B0199510
C0182140
D0254250

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A86492412.786449%
B86504675.398844%
C86502833.271676%
D865099611.514451%

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 9064 8649 0 0 0.00% 0.00%
B 9065 8650 130 130 1.43% 1.50%
C 9065 8650 0 0 0.00% 0.00%
D 9065 8651 694 694 7.66% 8.02%

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 13 254 13146 55.8 1068 1040 216.9
A 3 137 10949 45.68 1068 1040 216.9
A 0 226 8889 36.18 1068 1040 216.9
B 15 32 620509 3003.61 1060 1029 206.2
B 0 230 52433 249.24 1060 1029 206.2
B 12 111 26302 122.54 1060 1029 206.2
C 14 238 161687 661.22 1032 1037 243.0
C 2 16 59137 239.14 1032 1037 243.0
C 3 233 37149 148.63 1032 1037 243.0
D 1 52 2390614 10188.84 974 943 234.5
D 6 112 329748 1401.92 974 943 234.5
D 2 250 92734 391.37 974 943 234.5

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