ASTROSAT CZTI

Data Quality Report

Orbit 12801

Creation date: 2024-06-27T16:32:31.964766
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/AS1G08_071T01_9000001888_12801cztM0_level2.evt modeM0/AS1G08_071T01_9000001888_12801cztM0_level2_quad_clean.evt
Size (bytes)540,815,040103,184,640
Size515.8 MB 98.4 MB
Events in quadrant A3,719,369658,309
Events in quadrant B4,827,950642,769
Events in quadrant C3,391,739668,361
Events in quadrant D3,927,854630,944

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162973
B0194582
C0155842
D0172072

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75371131.499270%
B75375186.872761%
C7537811.074698%
D75372212.932201%

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 8228 7541 6 6 0.07% 0.08%
B 8228 7541 267 267 3.25% 3.54%
C 8228 7541 1 1 0.01% 0.01%
D 8228 7541 117 117 1.42% 1.55%

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 12 189 191496 1066.38 878 858 178.8
A 8 15 135722 754.4 878 858 178.8
A 13 248 15118 79.77 878 858 178.8
B 4 239 834890 5024.49 856 835 166.0
B 10 245 330203 1984.17 856 835 166.0
B 0 214 76202 454.02 856 835 166.0
C 14 234 11231 51.37 864 867 201.7
C 13 61 6220 26.53 864 867 201.7
C 15 208 5223 21.59 864 867 201.7
D 8 195 369435 1799.5 845 819 204.8
D 1 52 266245 1295.75 845 819 204.8
D 10 253 46773 224.34 845 819 204.8

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