ASTROSAT CZTI

Data Quality Report

Orbit 16253

Creation date: 2024-06-27T17:19:59.249100
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/AS1T02_112T01_9000002390_16253cztM0_level2.evt modeM0/AS1T02_112T01_9000002390_16253cztM0_level2_quad_clean.evt
Size (bytes)459,633,60074,145,600
Size438.3 MB 70.7 MB
Events in quadrant A3,617,662454,757
Events in quadrant B3,372,492463,691
Events in quadrant C3,371,242458,042
Events in quadrant D3,151,594449,818

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143222
B0136181
C0136311
D0129401

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60011883.132811%
B6001861.433094%
C60011171.949675%
D6001550.916514%

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 7277 6003 98 98 1.35% 1.63%
B 7277 6003 7 7 0.10% 0.12%
C 7277 6003 1 1 0.01% 0.02%
D 7277 6003 2 2 0.03% 0.03%

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 463173 2901.95 808 796 159.3
A 9 143 33259 203.74 808 796 159.3
A 3 1 13038 76.83 808 796 159.3
B 0 198 40071 257.07 815 799 152.8
B 0 189 39196 251.34 815 799 152.8
B 4 216 29538 188.12 815 799 152.8
C 3 233 131613 728.41 787 795 179.6
C 14 238 124771 690.31 787 795 179.6
C 0 207 35848 195.18 787 795 179.6
D 1 52 56561 292.45 799 778 190.7
D 15 0 30773 157.25 799 778 190.7
D 2 234 19901 100.25 799 778 190.7

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