ASTROSAT CZTI

Data Quality Report

Orbit 27450

Creation date: 2024-06-27T19:40:13.323557
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_27450cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27450cztM0_level2_quad_clean.evt
Size (bytes)492,301,44077,448,960
Size469.5 MB 73.9 MB
Events in quadrant A3,563,622467,552
Events in quadrant B3,693,835465,905
Events in quadrant C3,600,960446,770
Events in quadrant D3,545,472447,130

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152840
B0155760
C0153170
D0155830

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7447490.657983%
B7448550.738453%
C74481101.476907%
D7448600.805585%

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 7862 7448 2 2 0.03% 0.03%
B 7863 7448 1 1 0.01% 0.01%
C 7863 7448 1 1 0.01% 0.01%
D 7863 7449 18 18 0.23% 0.24%

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 12182 60.69 922 902 185.9
A 3 137 9037 43.77 922 902 185.9
A 0 226 7968 38.02 922 902 185.9
B 15 32 51090 284.88 909 884 176.2
B 0 244 22567 123.03 909 884 176.2
B 12 111 22100 120.38 909 884 176.2
C 14 238 140434 670.32 879 883 208.2
C 2 16 16633 75.65 879 883 208.2
C 15 208 10656 46.94 879 883 208.2
D 2 250 113142 525.93 893 868 213.5
D 2 234 35554 162.48 893 868 213.5
D 2 120 27303 123.83 893 868 213.5

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