ASTROSAT CZTI

Data Quality Report

Orbit 26009

Creation date: 2024-06-27T19:23:47.466856
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/AS1A07_068T01_9000003760_26009cztM0_level2.evt modeM0/AS1A07_068T01_9000003760_26009cztM0_level2_quad_clean.evt
Size (bytes)590,549,76093,271,680
Size563.2 MB 89.0 MB
Events in quadrant A3,642,494624,605
Events in quadrant B3,321,131633,558
Events in quadrant C3,245,356606,847
Events in quadrant D7,266,927537,236

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146660
B0137060
C0135430
D0257800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60401602.649007%
B6040661.092715%
C60401151.903974%
D6040112318.592715%

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 7265 6040 91 91 1.25% 1.51%
B 7265 6040 2 2 0.03% 0.03%
C 7265 6040 0 0 0.00% 0.00%
D 7265 6040 1047 1047 14.41% 17.33%

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 0 13 428887 2581.55 834 821 165.8
A 13 254 8760 47.88 834 821 165.8
A 0 226 7157 38.21 834 821 165.8
B 0 190 60882 395.77 819 800 151.8
B 10 245 42167 272.49 819 800 151.8
B 12 111 18365 115.7 819 800 151.8
C 14 238 132224 716.75 798 805 183.4
C 3 233 6389 30.45 798 805 183.4
C 13 61 5513 25.68 798 805 183.4
D 1 52 4050486 22074.33 766 750 183.5
D 12 233 274851 1494.07 766 750 183.5
D 2 234 22934 120.92 766 750 183.5

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