ASTROSAT CZTI

Data Quality Report

Orbit 37116

Creation date: 2024-06-27T21:35:45.610397
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_138T04_9000005282_37116cztM0_level2.evt modeM0/AS1A09_138T04_9000005282_37116cztM0_level2_quad_clean.evt
Size (bytes)440,634,24046,543,680
Size420.2 MB 44.4 MB
Events in quadrant A2,927,767271,710
Events in quadrant B3,015,969269,767
Events in quadrant C2,694,003260,804
Events in quadrant D4,362,736251,040

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116373
B0119322
C0107352
D0163592

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5075571.123153%
B50751452.857143%
C507540.078818%
D50754248.354680%

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 7229 5076 52 52 0.72% 1.02%
B 7228 5075 92 92 1.27% 1.81%
C 7228 5075 5 5 0.07% 0.10%
D 7229 5076 388 388 5.37% 7.64%

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 262367 2044.13 640 630 128.0
A 15 237 139896 1087.65 640 630 128.0
A 9 143 27001 205.95 640 630 128.0
B 5 172 379257 3164.45 628 614 119.7
B 5 200 69690 577.29 628 614 119.7
B 5 255 35893 294.84 628 614 119.7
C 15 214 218913 1548.34 610 616 141.0
C 0 10 56850 398.86 610 616 141.0
C 15 208 29426 204.34 610 616 141.0
D 1 52 1355831 9245.71 600 584 146.6
D 12 233 163199 1109.39 600 584 146.6
D 13 171 152736 1038.01 600 584 146.6

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