ASTROSAT CZTI

Data Quality Report

Orbit 24472

Creation date: 2024-06-27T19:06:21.060848
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_183T01_9000003606_24472cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24472cztM0_level2_quad_clean.evt
Size (bytes)1,201,420,800278,988,480
Size1.1 GB 266.1 MB
Events in quadrant A7,537,7491,873,919
Events in quadrant B7,712,4681,906,310
Events in quadrant C7,932,6841,823,736
Events in quadrant D12,118,9921,740,832

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0332733
B0334293
C0342363
D0470236

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03260
B03260
C03260
D03260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A160311631.016780%
B160311831.141538%
C160313131.952467%
D160319385.851163%

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 18686 16033 0 0 0.00% 0.00%
B 18686 16034 1 1 0.01% 0.01%
C 18686 16034 27 27 0.14% 0.17%
D 18686 16034 607 607 3.25% 3.79%

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 4 2 55359 137.48 1940 1899 388.9
A 13 254 26044 62.09 1940 1899 388.9
A 3 137 17569 40.3 1940 1899 388.9
B 7 202 73274 196.36 1930 1883 363.6
B 12 111 44342 116.78 1930 1883 363.6
B 0 190 40764 106.94 1930 1883 363.6
C 2 16 391028 909.53 1849 1855 427.9
C 14 238 296018 687.48 1849 1855 427.9
C 3 233 45932 103.01 1849 1855 427.9
D 1 52 2722894 6115.3 1846 1791 445.0
D 12 218 1245486 2795.03 1846 1791 445.0
D 8 195 525693 1177.4 1846 1791 445.0

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