ASTROSAT CZTI

Data Quality Report

Orbit 12922

Creation date: 2024-06-27T16:33:58.538668
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_116T01_9000001896_12922cztM0_level2.evt modeM0/AS1A04_116T01_9000001896_12922cztM0_level2_quad_clean.evt
Size (bytes)469,520,64089,075,520
Size447.8 MB 84.9 MB
Events in quadrant A3,061,544587,291
Events in quadrant B4,175,623547,485
Events in quadrant C2,746,048594,678
Events in quadrant D3,830,556550,631

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127642
B0163651
C0122101
D0153791

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5968530.888070%
B596865610.991957%
C596880.134048%
D59682564.289544%

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 7099 5970 16 16 0.23% 0.27%
B 7099 5970 346 346 4.87% 5.80%
C 7099 5970 0 0 0.00% 0.00%
D 7099 5970 191 191 2.69% 3.20%

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 1 162 95657 668.72 708 692 142.0
A 15 174 57914 402.94 708 692 142.0
A 1 178 46855 325.07 708 692 142.0
B 4 239 1415964 11286.1 669 653 125.4
B 3 64 115094 912.59 669 653 125.4
B 12 111 13499 102.44 669 653 125.4
C 4 112 14625 87.29 698 701 159.5
C 8 229 5094 27.54 698 701 159.5
C 13 61 5052 27.28 698 701 159.5
D 1 52 1033256 6387.5 678 657 161.7
D 8 195 80741 495.39 678 657 161.7
D 2 14 68313 418.51 678 657 161.7

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