ASTROSAT CZTI

Data Quality Report

Orbit 11425

Creation date: 2024-06-27T16:12:44.154930
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/AS1A04_024T04_9000001670_11425cztM0_level2.evt modeM0/AS1A04_024T04_9000001670_11425cztM0_level2_quad_clean.evt
Size (bytes)619,450,560108,650,880
Size590.8 MB 103.6 MB
Events in quadrant A3,744,127697,751
Events in quadrant B6,684,317681,101
Events in quadrant C3,566,126699,271
Events in quadrant D4,229,064662,094

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165393
B0252582
C0162492
D0180812

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7906540.683026%
B790696212.167974%
C7906390.493296%
D79061371.732861%

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 7966 7907 0 0 0.00% 0.00%
B 7966 7907 462 462 5.80% 5.84%
C 7966 7907 1 1 0.01% 0.01%
D 7966 7907 78 78 0.98% 0.99%

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 1 162 53870 278.19 929 910 190.4
A 1 178 29605 150.73 929 910 190.4
A 8 5 26378 133.78 929 910 190.4
B 4 239 1529255 9006.2 898 875 169.7
B 3 64 1091856 6428.76 898 875 169.7
B 15 204 186374 1093.08 898 875 169.7
C 12 4 7734 32.3 909 912 211.2
C 13 61 6846 28.1 909 912 211.2
C 0 207 5837 23.32 909 912 211.2
D 10 253 168653 770.74 898 869 217.7
D 1 52 163802 748.46 898 869 217.7
D 13 172 145742 665.5 898 869 217.7

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