ASTROSAT CZTI

Data Quality Report

Orbit 09085

Creation date: 2024-06-27T15:40:57.826928
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/AS1A03_120T01_9000001266_09085cztM0_level2.evt modeM0/AS1A03_120T01_9000001266_09085cztM0_level2_quad_clean.evt
Size (bytes)418,083,84087,563,520
Size398.7 MB 83.5 MB
Events in quadrant A3,331,603547,471
Events in quadrant B3,000,700568,732
Events in quadrant C2,833,948561,663
Events in quadrant D3,064,082532,001

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0201
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152651329
B0141581018
C013871947
D0148401186

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014212
B01428
C01428
D01426

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6269631.004945%
B6330350.552923%
C6352180.283375%
D6308360.570704%

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 8869 6705 23 23 0.26% 0.34%
B 8869 6717 2 2 0.02% 0.03%
C 8869 6726 0 0 0.00% 0.00%
D 8869 6715 22 22 0.25% 0.33%

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 8 5 280821 1895.53 726 712 147.8
A 4 2 75231 504.28 726 712 147.8
A 1 162 71991 482.35 726 712 147.8
B 0 219 30973 214.42 743 725 141.1
B 4 48 26625 183.6 743 725 141.1
B 0 230 19397 132.36 743 725 141.1
C 13 61 5584 28.61 725 730 169.6
C 12 4 3658 17.26 725 730 169.6
C 3 202 1874 6.74 725 730 169.6
D 8 195 92398 482.56 707 691 190.0
D 7 71 90194 470.97 707 691 190.0
D 12 233 46389 240.46 707 691 190.0

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