ASTROSAT CZTI

Data Quality Report

Orbit 37002

Creation date: 2024-06-27T21:34:05.191866
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_079T01_9000005254_37002cztM0_level2.evt modeM0/AS1A11_079T01_9000005254_37002cztM0_level2_quad_clean.evt
Size (bytes)359,645,76057,643,200
Size343.0 MB 55.0 MB
Events in quadrant A2,446,160352,311
Events in quadrant B2,738,918356,193
Events in quadrant C2,698,739354,400
Events in quadrant D2,667,412331,597

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104413
B0113442
C0110632
D0114882

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A499490.180216%
B4994490.981177%
C4994300.600721%
D49941382.763316%

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 6936 4995 0 0 0.00% 0.00%
B 6936 4995 39 39 0.56% 0.78%
C 6936 4995 28 28 0.40% 0.56%
D 6936 4995 128 128 1.85% 2.56%

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 210587 1830.62 568 557 114.7
A 15 223 17918 151.32 568 557 114.7
A 15 222 8852 72.3 568 557 114.7
B 5 184 232960 2142.75 564 550 108.5
B 5 172 126606 1162.2 564 550 108.5
B 0 221 48003 437.5 564 550 108.5
C 15 214 213740 1630.73 556 561 130.7
C 0 207 86405 656.67 556 561 130.7
C 0 10 80241 609.52 556 561 130.7
D 2 153 347245 2593.7 544 530 133.7
D 1 52 66714 495.11 544 530 133.7
D 2 250 64138 475.84 544 530 133.7

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