ASTROSAT CZTI

Data Quality Report

Orbit 36361

Creation date: 2022-06-19T21:12:39.180973
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/AS1A11_097T17_9000005194_36361cztM0_level2.evt modeM0/AS1A11_097T17_9000005194_36361cztM0_level2_quad_clean.evt
Size (bytes)439,041,60094,826,880
Size418.7 MB 90.4 MB
Events in quadrant A2,740,947641,338
Events in quadrant B2,998,803637,311
Events in quadrant C3,127,838633,260
Events in quadrant D4,077,372596,947

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114333
B0123282
C0124392
D0155992

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5178140.270375%
B5178691.332561%
C5178971.873310%
D51782084.016995%

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 7181 5179 1 1 0.01% 0.02%
B 7181 5179 55 55 0.77% 1.06%
C 7181 5179 83 83 1.16% 1.60%
D 7181 5179 222 222 3.09% 4.29%

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 183247 1410.59 644 634 129.5
A 12 189 41279 313.96 644 634 129.5
A 9 143 18021 134.31 644 634 129.5
B 5 172 293973 2493.91 627 613 117.6
B 0 213 72798 613.66 627 613 117.6
B 0 189 49211 413.14 627 613 117.6
C 0 207 290779 2019.89 624 631 143.6
C 15 214 219473 1523.48 624 631 143.6
C 0 10 180205 1250.12 624 631 143.6
D 12 6 644209 4316.08 622 608 149.1
D 2 249 493839 3307.67 622 608 149.1
D 12 235 144587 965.54 622 608 149.1

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