ASTROSAT CZTI

Data Quality Report

Orbit 27428

Creation date: 2024-06-27T19:39:58.073516
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_249T01_9000003934_27428cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27428cztM0_level2_quad_clean.evt
Size (bytes)472,040,640106,007,040
Size450.2 MB 101.1 MB
Events in quadrant A3,315,953705,240
Events in quadrant B3,401,196718,706
Events in quadrant C3,414,198672,919
Events in quadrant D3,714,633652,029

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138610
B0140990
C0142370
D0154440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6615240.362812%
B6615380.574452%
C6615851.284958%
D66151161.753590%

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 7850 6616 0 0 0.00% 0.00%
B 7850 6616 0 0 0.00% 0.00%
C 7850 6616 0 0 0.00% 0.00%
D 7850 6616 93 93 1.18% 1.41%

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 9303 49.75 859 846 170.0
A 3 137 7540 39.38 859 846 170.0
A 0 226 7222 37.51 859 846 170.0
B 0 189 23018 137.87 858 838 160.9
B 12 111 19381 115.26 858 838 160.9
B 0 190 19217 114.24 858 838 160.9
C 14 238 132780 697.75 818 823 189.1
C 7 221 44379 230.31 818 823 189.1
C 10 22 28689 147.35 818 823 189.1
D 1 52 569399 2982.04 814 795 190.7
D 2 250 53143 274.54 814 795 190.7
D 2 234 25053 127.22 814 795 190.7

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