ASTROSAT CZTI

Data Quality Report

Orbit 15980

Creation date: 2024-06-27T17:16:01.397480
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/AS1T02_100T01_9000002354_15980cztM0_level2.evt modeM0/AS1T02_100T01_9000002354_15980cztM0_level2_quad_clean.evt
Size (bytes)137,537,28039,617,280
Size131.2 MB 37.8 MB
Events in quadrant A917,817273,048
Events in quadrant B1,285,675276,479
Events in quadrant C900,310263,417
Events in quadrant D937,247255,483

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A038281
B050631
C038151
D039991

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A178920.111794%
B1789331.844606%
C178930.167691%
D178940.223589%

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 1790 1790 0 0 0.00% 0.00%
B 1790 1790 19 19 1.06% 1.06%
C 1790 1790 0 0 0.00% 0.00%
D 1790 1790 4 4 0.22% 0.22%

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 15 239 4902 96.89 235 232 48.2
A 13 248 3374 65.18 235 232 48.2
A 9 143 2846 54.23 235 232 48.2
B 0 189 215836 4766.77 233 229 45.2
B 7 220 56831 1251.39 233 229 45.2
B 0 190 30097 660.34 233 229 45.2
C 14 238 33359 640.82 217 219 51.7
C 3 233 13255 252.07 217 219 51.7
C 0 207 3853 70.27 217 219 51.7
D 2 152 43591 781.21 220 214 55.5
D 12 218 34053 609.43 220 214 55.5
D 2 234 8962 157.55 220 214 55.5

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