ASTROSAT CZTI

Data Quality Report

Orbit 17508

Creation date: 2024-06-27T17:37:25.335574
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_068T01_9000002594_17508cztM0_level2.evt modeM0/AS1T03_068T01_9000002594_17508cztM0_level2_quad_clean.evt
Size (bytes)483,425,28091,909,440
Size461.0 MB 87.7 MB
Events in quadrant A3,501,849575,084
Events in quadrant B3,545,140578,622
Events in quadrant C3,591,598554,182
Events in quadrant D3,488,908550,136

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154172
B0154022
C0154362
D0156722

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7552540.715042%
B7552630.834216%
C7553791.045942%
D7552440.582627%

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 9077 7553 4 4 0.04% 0.05%
B 9077 7554 0 0 0.00% 0.00%
C 9078 7555 0 0 0.00% 0.00%
D 9077 7554 10 10 0.11% 0.13%

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 15 174 42122 225.7 900 879 182.7
A 0 226 7658 37.1 900 879 182.7
A 3 137 6893 32.91 900 879 182.7
B 12 111 20760 114.51 901 878 173.6
B 11 111 18175 99.62 901 878 173.6
B 14 111 14876 80.62 901 878 173.6
C 14 238 133939 653.82 870 876 203.5
C 3 233 45207 217.83 870 876 203.5
C 5 218 22035 103.97 870 876 203.5
D 10 70 53744 247.18 881 853 214.0
D 13 189 50768 233.27 881 853 214.0
D 7 238 26424 119.5 881 853 214.0

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