ASTROSAT CZTI

Data Quality Report

Orbit 35968

Creation date: 2024-06-27T21:21:10.086054
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/AS1T05_009T08_9000005150_35968cztM0_level2.evt modeM0/AS1T05_009T08_9000005150_35968cztM0_level2_quad_clean.evt
Size (bytes)344,928,96040,052,160
Size328.9 MB 38.2 MB
Events in quadrant A1,201,807312,561
Events in quadrant B5,994,850127,473
Events in quadrant C1,404,033308,853
Events in quadrant D1,681,729290,394

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050162
B0194731
C055781
D066161

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A239960.250104%
B2399228595.248020%
C2399431.792414%
D2399953.959983%

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 4132 2400 2 2 0.05% 0.08%
B 4132 2399 2191 2191 53.03% 91.33%
C 4132 2400 31 31 0.75% 1.29%
D 4132 2400 58 58 1.40% 2.42%

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 82128 1394.25 283 277 58.7
A 8 144 11512 191.38 283 277 58.7
A 15 169 5239 84.52 283 277 58.7
B 5 31 2280479 87508.08 126 123 26.1
B 5 15 2091061 80239.21 126 123 26.1
B 5 14 771143 29587.69 126 123 26.1
C 9 187 139010 2119.78 274 276 65.4
C 15 214 101473 1546.23 274 276 65.4
C 0 10 68896 1048.48 274 276 65.4
D 12 17 97863 1440.98 271 262 67.7
D 2 250 92336 1359.38 271 262 67.7
D 8 195 87113 1282.26 271 262 67.7

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