ASTROSAT CZTI

Data Quality Report

Orbit 16771

Creation date: 2024-06-27T17:27:26.928562
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/AS1A05_004T05_9000002488_16771cztM0_level2.evt modeM0/AS1A05_004T05_9000002488_16771cztM0_level2_quad_clean.evt
Size (bytes)642,392,64066,640,320
Size612.6 MB 63.6 MB
Events in quadrant A4,733,331370,661
Events in quadrant B3,646,530406,983
Events in quadrant C6,508,339377,716
Events in quadrant D4,102,504383,441

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183183
B0150612
C0241752
D0164882

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68655297.705754%
B6865711.034232%
C68653334.850692%
D68651051.529497%

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 7906 6867 344 344 4.35% 5.01%
B 7906 6867 1 1 0.01% 0.01%
C 7906 6867 15 15 0.19% 0.22%
D 7906 6867 64 64 0.81% 0.93%

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 1573253 9479.4 821 804 165.9
A 0 226 7286 39.08 821 804 165.9
A 12 194 5995 31.29 821 804 165.9
B 5 65 109684 678.21 843 821 160.5
B 15 35 103008 636.62 843 821 160.5
B 5 236 52204 320.12 843 821 160.5
C 3 233 3161181 17080.66 795 802 185.0
C 14 238 122901 659.9 795 802 185.0
C 0 207 119922 643.8 795 802 185.0
D 12 110 419458 2108.53 813 792 198.6
D 1 52 307359 1543.97 813 792 198.6
D 11 176 193210 969.08 813 792 198.6

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