ASTROSAT CZTI

Data Quality Report

Orbit 37228

Creation date: 2024-06-27T21:37:09.996365
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/AS1A10_123T11_9000005286_37228cztM0_level2.evt modeM0/AS1A10_123T11_9000005286_37228cztM0_level2_quad_clean.evt
Size (bytes)132,514,56015,670,080
Size126.4 MB 14.9 MB
Events in quadrant A933,93489,627
Events in quadrant B981,32089,254
Events in quadrant C947,41187,324
Events in quadrant D1,034,55384,927

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A037532
B039081
C037241
D041261

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A166690.540216%
B1666130.780312%
C1666231.380552%
D1666201.200480%

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 3429 1667 1 1 0.03% 0.06%
B 3429 1667 6 6 0.17% 0.36%
C 3429 1667 17 17 0.50% 1.02%
D 3429 1667 16 16 0.47% 0.96%

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 10 83 108102 2452.76 209 206 44.0
A 15 223 9368 208.28 209 206 44.0
A 13 248 2716 57.06 209 206 44.0
B 0 213 64309 1525.64 209 204 42.0
B 5 172 50700 1201.76 209 204 42.0
B 0 230 20044 472.17 209 204 42.0
C 15 214 73387 1507.75 203 204 48.5
C 0 10 63681 1307.78 203 204 48.5
C 14 254 7258 145.33 203 204 48.5
D 12 248 72855 1419.02 203 197 51.2
D 10 253 57662 1122.3 203 197 51.2
D 12 235 25694 497.96 203 197 51.2

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