ASTROSAT CZTI

Data Quality Report

Orbit 25669

Creation date: 2024-06-27T19:20:13.405671
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/AS1A09_016T03_9000003740_25669cztM0_level2.evt modeM0/AS1A09_016T03_9000003740_25669cztM0_level2_quad_clean.evt
Size (bytes)550,687,68085,754,880
Size525.2 MB 81.8 MB
Events in quadrant A4,167,834526,809
Events in quadrant B3,798,290536,950
Events in quadrant C3,780,018502,842
Events in quadrant D4,408,275494,214

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168950
B0159350
C0159180
D0177490

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76992893.753734%
B77002062.675325%
C77002302.987013%
D77001752.272727%

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 7889 7699 52 52 0.66% 0.68%
B 7890 7701 0 0 0.00% 0.00%
C 7890 7701 0 0 0.00% 0.00%
D 7890 7701 24 24 0.30% 0.31%

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 12 96 333135 1718.47 954 932 193.3
A 8 192 155722 800.72 954 932 193.3
A 13 254 9853 46.15 954 932 193.3
B 0 245 27592 145.18 955 932 183.6
B 12 111 23497 122.88 955 932 183.6
B 11 111 21274 110.77 955 932 183.6
C 14 238 146591 678.98 915 922 214.5
C 2 16 30742 138.99 915 922 214.5
C 8 128 13504 58.65 915 922 214.5
D 8 195 559136 2460.34 927 897 226.9
D 1 52 202084 886.7 927 897 226.9
D 2 244 124279 543.78 927 897 226.9

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