ASTROSAT CZTI

Data Quality Report

Orbit 32187

Creation date: 2024-06-27T20:37:22.271790
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_131T01_9000004690_32187cztM0_level2.evt modeM0/AS1A09_131T01_9000004690_32187cztM0_level2_quad_clean.evt
Size (bytes)550,272,96077,880,960
Size524.8 MB 74.3 MB
Events in quadrant A2,933,732490,455
Events in quadrant B5,216,922481,544
Events in quadrant C3,827,050477,377
Events in quadrant D4,265,826474,470

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127812
B0199711
C0154581
D0169384

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6225410.658635%
B62252313.710843%
C62253826.136546%
D62241482.377892%

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 7125 6226 2 2 0.03% 0.03%
B 7125 6226 81 81 1.14% 1.30%
C 7125 6226 50 50 0.70% 0.80%
D 7125 6226 79 79 1.11% 1.27%

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 13 6 20039 128.22 750 734 150.6
A 13 254 11791 73.44 750 734 150.6
A 9 143 9230 56.43 750 734 150.6
B 6 159 1842709 13242.76 733 715 139.1
B 5 172 292230 2095.81 733 715 139.1
B 0 190 74172 528.11 733 715 139.1
C 3 233 502378 3052.22 708 713 164.4
C 14 238 190666 1155.71 708 713 164.4
C 0 10 136054 823.44 708 713 164.4
D 8 195 819602 4709.73 727 707 173.9
D 12 218 224677 1288.12 727 707 173.9
D 7 38 151355 866.43 727 707 173.9

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