ASTROSAT CZTI

Data Quality Report

Orbit 17618

Creation date: 2024-06-27T17:38:42.519716
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_027T01_9000002608_17618cztM0_level2.evt modeM0/AS1T03_027T01_9000002608_17618cztM0_level2_quad_clean.evt
Size (bytes)176,898,24051,073,920
Size168.7 MB 48.7 MB
Events in quadrant A1,193,640344,019
Events in quadrant B1,208,191346,934
Events in quadrant C1,342,815335,074
Events in quadrant D1,429,612329,922

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A053220
B053340
C055260
D061480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A265620.075301%
B265730.112909%
C265760.225819%
D2657321.204366%

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 2656 2656 0 0 0.00% 0.00%
B 2657 2657 0 0 0.00% 0.00%
C 2657 2657 0 0 0.00% 0.00%
D 2657 2657 67 67 2.52% 2.52%

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 0 226 2801 38.95 310 305 64.1
A 12 194 2275 30.74 310 305 64.1
A 3 137 2184 29.32 310 305 64.1
B 0 229 9996 159.41 305 297 60.8
B 12 111 6651 104.43 305 297 60.8
B 11 111 5967 93.19 305 297 60.8
C 3 233 135886 1971.0 291 293 68.8
C 14 238 46685 674.36 291 293 68.8
C 5 218 23691 340.12 291 293 68.8
D 1 52 262648 3575.23 299 291 73.4
D 13 189 18983 254.72 299 291 73.4
D 2 234 9733 128.67 299 291 73.4

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