ASTROSAT CZTI

Data Quality Report

Orbit 26430

Creation date: 2024-06-27T19:28:55.956991
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/AS1A09_108T02_9000003822_26430cztM0_level2.evt modeM0/AS1A09_108T02_9000003822_26430cztM0_level2_quad_clean.evt
Size (bytes)525,461,760109,056,960
Size501.1 MB 104.0 MB
Events in quadrant A3,552,297717,396
Events in quadrant B3,704,565741,261
Events in quadrant C4,076,599709,951
Events in quadrant D4,156,402698,036

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147200
B0151640
C0163830
D0166040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62561001.598465%
B62571412.253476%
C62572634.203292%
D62571913.052581%

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 8896 6257 0 0 0.00% 0.00%
B 8897 6258 3 3 0.03% 0.05%
C 8897 6258 43 43 0.48% 0.69%
D 8897 6258 85 85 0.96% 1.36%

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 6 16 97089 548.24 894 879 175.5
A 13 254 11221 58.93 894 879 175.5
A 0 226 7721 38.99 894 879 175.5
B 0 244 101669 613.43 898 879 164.3
B 5 172 45810 273.46 898 879 164.3
B 0 182 29203 172.39 898 879 164.3
C 2 16 259594 1274.99 880 890 202.9
C 3 233 223024 1094.76 880 890 202.9
C 14 238 140196 686.55 880 890 202.9
D 1 52 327404 1565.49 887 870 208.6
D 12 16 215297 1028.02 887 870 208.6
D 11 176 136752 651.45 887 870 208.6

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