ASTROSAT CZTI

Data Quality Report

Orbit 26764

Creation date: 2024-06-27T19:32:34.773902
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/AS1A09_044T02_9000003852_26764cztM0_level2.evt modeM0/AS1A09_044T02_9000003852_26764cztM0_level2_quad_clean.evt
Size (bytes)818,251,20077,742,720
Size780.3 MB 74.1 MB
Events in quadrant A3,994,413549,996
Events in quadrant B7,756,985397,302
Events in quadrant C3,787,792525,861
Events in quadrant D8,817,393440,399

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163300
B0275470
C0153610
D0306090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62901512.400636%
B6290186629.666137%
C62902393.799682%
D6290193030.683625%

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 7600 6290 0 0 0.00% 0.00%
B 7600 6290 1476 1476 19.42% 23.47%
C 7600 6291 14 14 0.18% 0.22%
D 7600 6290 1452 1452 19.11% 23.08%

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 0 13 332002 1779.43 942 927 186.1
A 9 130 21922 112.84 942 927 186.1
A 6 16 11829 58.59 942 927 186.1
B 0 189 4500235 29611.03 818 802 152.0
B 3 112 23168 147.19 818 802 152.0
B 0 190 20594 130.25 818 802 152.0
C 2 16 151856 742.01 888 897 203.4
C 14 238 144096 703.86 888 897 203.4
C 15 208 20153 94.65 888 897 203.4
D 7 80 5014218 25252.34 802 781 198.5
D 1 52 293013 1471.95 802 781 198.5
D 15 35 233047 1169.91 802 781 198.5

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