ASTROSAT CZTI

Data Quality Report

Orbit 24009

Creation date: 2024-06-27T19:01:05.823069
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/AS1A07_165T01_9000003558_24009cztM0_level2.evt modeM0/AS1A07_165T01_9000003558_24009cztM0_level2_quad_clean.evt
Size (bytes)498,674,880134,461,440
Size475.6 MB 128.2 MB
Events in quadrant A3,229,697916,674
Events in quadrant B3,438,165936,251
Events in quadrant C3,397,691897,230
Events in quadrant D4,585,985859,302

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138022
B0143822
C0142322
D0178612

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6641330.496913%
B6641630.948652%
C6640951.430723%
D66403214.834337%

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 7671 6642 3 3 0.04% 0.05%
B 7671 6642 21 21 0.27% 0.32%
C 7670 6641 9 9 0.12% 0.14%
D 7670 6641 222 222 2.89% 3.34%

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 6 16 35767 209.51 829 810 166.9
A 13 254 10072 55.51 829 810 166.9
A 0 226 6971 36.93 829 810 166.9
B 0 197 168305 1084.61 825 805 154.4
B 0 190 24158 151.22 825 805 154.4
B 12 111 18471 114.39 825 805 154.4
C 14 238 129903 694.55 806 811 185.9
C 0 239 81122 432.09 806 811 185.9
C 7 247 48479 256.47 806 811 185.9
D 1 52 1049941 5392.1 804 780 194.6
D 8 195 436064 2237.11 804 780 194.6
D 2 234 30308 151.76 804 780 194.6

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