ASTROSAT CZTI

Data Quality Report

Orbit 11447

Creation date: 2024-06-27T16:12:52.933684
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/AS1A04_021T02_9000001676_11447cztM0_level2.evt modeM0/AS1A04_021T02_9000001676_11447cztM0_level2_quad_clean.evt
Size (bytes)499,262,40098,323,200
Size476.1 MB 93.8 MB
Events in quadrant A3,402,629631,248
Events in quadrant B4,650,673618,600
Events in quadrant C3,108,699662,183
Events in quadrant D3,525,062620,223

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139702
B0181031
C0131981
D0145341

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63811041.629839%
B63814036.315625%
C6381781.222379%
D63811191.864911%

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 7572 6382 0 0 0.00% 0.00%
B 7572 6382 196 196 2.59% 3.07%
C 7572 6383 1 1 0.01% 0.02%
D 7572 6382 23 23 0.30% 0.36%

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 1 162 90806 545.31 818 802 165.1
A 1 178 50378 300.37 818 802 165.1
A 1 161 42533 252.84 818 802 165.1
B 4 239 1196655 7965.88 795 777 150.1
B 15 204 172444 1143.49 795 777 150.1
B 11 51 65922 433.94 795 777 150.1
C 14 234 7262 35.28 795 802 183.1
C 13 61 5892 27.8 795 802 183.1
C 12 4 3070 12.39 795 802 183.1
D 1 52 138372 732.95 794 774 187.7
D 13 249 62669 329.7 794 774 187.7
D 13 104 50761 266.27 794 774 187.7

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