ASTROSAT CZTI

Data Quality Report

Orbit 48262

Creation date: 2024-09-05T22:01:08.286606
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/AS1A13_029T01_9000006422_48262cztM0_level2.fits modeM0/AS1A13_029T01_9000006422_48262cztM0_level2_quad_clean.evt
Size (bytes)630,155,520130,573,440
Size601.0 MB 124.5 MB
Events in quadrant A8,578,594844,598
Events in quadrant B4,303,530899,576
Events in quadrant C3,812,313868,184
Events in quadrant D5,994,500769,680

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0311126
B0184921
C0173792
D0236361

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82236117.430378%
B82263003.646973%
C8225991.203647%
D82254935.993921%

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 8770 8225 3 3 0.03% 0.04%
B 8770 8225 24 24 0.27% 0.29%
C 8769 8224 0 0 0.00% 0.00%
D 8770 8225 328 328 3.74% 3.99%

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 10 83 4811481 23545.42 965 943 204.3
A 3 14 21219 99.24 965 943 204.3
A 13 254 17262 79.87 965 943 204.3
B 4 21 273505 1399.22 973 939 194.8
B 0 186 43509 218.53 973 939 194.8
B 5 255 31205 155.37 973 939 194.8
C 14 254 26210 110.46 962 967 228.5
C 3 233 19588 81.48 962 967 228.5
C 12 2 10720 42.68 962 967 228.5
D 2 165 1452313 6037.12 952 921 240.4
D 2 249 262049 1086.17 952 921 240.4
D 12 221 192930 798.67 952 921 240.4

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