ASTROSAT CZTI

Data Quality Report

Orbit 37149

Creation date: 2024-06-27T21:36:13.077240
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_9000005284_37149cztM0_level2.evt modeM0/AS1A11_079T01_9000005284_37149cztM0_level2_quad_clean.evt
Size (bytes)426,012,48072,650,880
Size406.3 MB 69.3 MB
Events in quadrant A2,917,272456,695
Events in quadrant B3,026,849454,268
Events in quadrant C3,048,055451,045
Events in quadrant D3,510,906427,925

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125313
B0129692
C0126782
D0145422

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5869250.425967%
B5869811.380133%
C5869230.391890%
D58691762.998807%

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 7212 5870 20 20 0.28% 0.34%
B 7212 5870 58 58 0.80% 0.99%
C 7212 5870 14 14 0.19% 0.24%
D 7212 5870 159 159 2.20% 2.71%

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 272060 2032.55 663 651 133.5
A 15 237 32236 236.54 663 651 133.5
A 15 174 18532 133.91 663 651 133.5
B 5 172 315665 2496.2 656 640 126.2
B 0 182 79087 621.6 656 640 126.2
B 5 200 18844 144.25 656 640 126.2
C 15 214 271662 1786.05 648 655 151.7
C 0 10 121221 794.58 648 655 151.7
C 15 159 51366 334.21 648 655 151.7
D 2 249 484920 3091.32 641 623 156.7
D 2 250 276135 1758.62 641 623 156.7
D 10 118 64101 405.19 641 623 156.7

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