ASTROSAT CZTI

Data Quality Report

Orbit 32175

Creation date: 2024-06-27T20:37:14.724797
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_32175cztM0_level2.evt modeM0/AS1A09_131T01_9000004690_32175cztM0_level2_quad_clean.evt
Size (bytes)574,649,28094,550,400
Size548.0 MB 90.2 MB
Events in quadrant A3,044,094613,803
Events in quadrant B5,227,195615,251
Events in quadrant C3,530,079609,370
Events in quadrant D5,185,329594,990

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132022
B0202311
C0146151
D0195901

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6155310.503656%
B61552403.899269%
C61553595.832656%
D61551772.875711%

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 7270 6156 0 0 0.00% 0.00%
B 7270 6156 102 102 1.40% 1.66%
C 7270 6156 99 99 1.36% 1.61%
D 7270 6156 90 90 1.24% 1.46%

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 12 189 64369 417.75 761 746 152.3
A 13 6 37987 244.53 761 746 152.3
A 13 254 11396 69.93 761 746 152.3
B 6 159 1801250 12794.07 751 732 140.7
B 5 172 336323 2384.63 751 732 140.7
B 0 190 117682 831.02 751 732 140.7
C 0 10 412151 2461.55 724 728 167.1
C 14 238 152562 908.42 724 728 167.1
C 14 254 49044 289.07 724 728 167.1
D 8 195 1994092 11182.31 742 722 178.3
D 12 218 93267 519.15 742 722 178.3
D 1 52 91990 511.99 742 722 178.3

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