ASTROSAT CZTI

Data Quality Report

Orbit 40505

Creation date: 2024-06-27T22:16:55.340304
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/AS1A12_022T01_9000005540_40505cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40505cztM0_level2_quad_clean.evt
Size (bytes)347,774,40089,591,040
Size331.7 MB 85.4 MB
Events in quadrant A2,951,191632,518
Events in quadrant B2,903,143643,745
Events in quadrant C2,926,114598,798
Events in quadrant D3,688,653474,431

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119373
B0119482
C0117652
D0142982

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5183200.385877%
B5183541.041868%
C5183611.176925%
D518399619.216670%

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 7306 5184 12 12 0.16% 0.23%
B 7306 5184 32 32 0.44% 0.62%
C 7306 5184 59 59 0.81% 1.14%
D 7306 5184 218 218 2.98% 4.21%

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 472258 3901.09 596 586 120.9
A 12 189 123395 1015.73 596 586 120.9
A 7 3 39646 323.06 596 586 120.9
B 3 112 431913 3872.89 587 572 111.4
B 5 255 132306 1182.8 587 572 111.4
B 4 171 36550 323.04 587 572 111.4
C 14 254 383973 2912.3 573 576 131.6
C 15 214 227135 1720.95 573 576 131.6
C 9 187 31516 235.02 573 576 131.6
D 12 227 824460 6363.59 527 512 129.5
D 12 191 204199 1573.14 527 512 129.5
D 12 0 154774 1191.41 527 512 129.5

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