ASTROSAT CZTI

Data Quality Report

Orbit 36650

Creation date: 2024-06-27T21:29:44.081213
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_049T04_9000005230_36650cztM0_level2.evt modeM0/AS1A11_049T04_9000005230_36650cztM0_level2_quad_clean.evt
Size (bytes)431,009,28051,431,040
Size411.0 MB 49.0 MB
Events in quadrant A2,799,710307,488
Events in quadrant B2,732,508310,785
Events in quadrant C3,845,523288,715
Events in quadrant D3,319,575282,889

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113033
B0111352
C0144532
D0131232

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A523270.133792%
B5232160.305810%
C52323977.587920%
D52321452.771407%

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 7175 5233 2 2 0.03% 0.04%
B 7175 5233 3 3 0.04% 0.06%
C 7175 5233 307 307 4.28% 5.87%
D 7175 5233 111 111 1.55% 2.12%

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 203861 1543.99 660 647 131.6
A 9 143 32798 244.28 660 647 131.6
A 13 6 9674 68.59 660 647 131.6
B 5 255 38649 309.02 656 641 123.0
B 0 221 35442 282.94 656 641 123.0
B 0 199 35292 281.72 656 641 123.0
C 14 254 509980 3572.14 619 624 142.6
C 0 10 379006 2653.61 619 624 142.6
C 12 249 306889 2147.85 619 624 142.6
D 2 249 225656 1477.0 628 612 152.4
D 13 171 215753 1412.0 628 612 152.4
D 12 6 203894 1334.17 628 612 152.4

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