ASTROSAT CZTI

Data Quality Report

Orbit 38026

Creation date: 2024-06-27T21:47:29.233179
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_082T01_9000005356_38026cztM0_level2.fits modeM0/AS1A11_082T01_9000005356_38026cztM0_level2_quad_clean.evt
Size (bytes)342,175,680101,952,000
Size326.3 MB 97.2 MB
Events in quadrant A3,158,665688,947
Events in quadrant B2,988,879716,811
Events in quadrant C2,840,338691,124
Events in quadrant D3,265,503619,250

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124963
B0121102
C0112622
D0129322

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5304500.942685%
B5304611.150075%
C5304130.245098%
D53041051.979638%

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 7277 5305 32 32 0.44% 0.60%
B 7277 5305 38 38 0.52% 0.72%
C 7277 5305 5 5 0.07% 0.09%
D 7277 5305 75 75 1.03% 1.41%

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 361984 2789.9 646 634 129.5
A 12 16 138274 1062.69 646 634 129.5
A 9 143 109898 843.6 646 634 129.5
B 5 172 160357 1319.98 648 631 121.0
B 5 255 101163 830.8 648 631 121.0
B 5 200 45444 370.34 648 631 121.0
C 15 214 227183 1540.47 645 650 147.1
C 14 254 56740 381.42 645 650 147.1
C 3 233 14521 94.33 645 650 147.1
D 2 250 234918 1538.04 632 616 152.3
D 13 249 183569 1200.97 632 616 152.3
D 7 223 152327 995.89 632 616 152.3

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