ASTROSAT CZTI

Data Quality Report

Orbit 18150

Creation date: 2024-06-27T17:45:52.466457
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/AS1A05_103T01_9000002700_18150cztM0_level2.evt modeM0/AS1A05_103T01_9000002700_18150cztM0_level2_quad_clean.evt
Size (bytes)176,405,76032,313,600
Size168.2 MB 30.8 MB
Events in quadrant A1,344,183208,625
Events in quadrant B1,214,615213,383
Events in quadrant C1,208,605204,576
Events in quadrant D1,431,699200,723

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A054731
B049671
C049581
D056792

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A20761024.913295%
B2076833.998073%
C2076934.479769%
D20751215.831325%

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 3381 2076 3 3 0.09% 0.14%
B 3381 2077 0 0 0.00% 0.00%
C 3381 2077 0 0 0.00% 0.00%
D 3380 2075 37 37 1.09% 1.78%

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 15 174 138127 2172.26 313 308 63.4
A 0 226 2797 39.23 313 308 63.4
A 12 194 2347 32.14 313 308 63.4
B 12 111 6748 109.17 306 300 59.1
B 10 247 5773 92.67 306 300 59.1
B 11 111 5733 91.99 306 300 59.1
C 14 238 46365 658.19 297 298 70.0
C 3 233 3229 41.88 297 298 70.0
C 13 61 2203 27.22 297 298 70.0
D 10 70 107183 1448.47 301 293 73.8
D 7 238 71241 961.42 301 293 73.8
D 13 187 37941 510.17 301 293 73.8

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