ASTROSAT CZTI

Data Quality Report

Orbit 25745

Creation date: 2024-06-27T19:21:02.991373
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_033T01_9000003750_25745cztM0_level2.evt modeM0/AS1A09_033T01_9000003750_25745cztM0_level2_quad_clean.evt
Size (bytes)468,239,04070,444,800
Size446.5 MB 67.2 MB
Events in quadrant A3,365,856425,575
Events in quadrant B3,531,759425,052
Events in quadrant C3,362,958405,023
Events in quadrant D3,460,134405,404

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140490
B0147480
C0140580
D0146330

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6768510.753546%
B6768681.004728%
C6768791.167258%
D6767721.063987%

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 7693 6768 0 0 0.00% 0.00%
B 7693 6768 6 6 0.08% 0.09%
C 7693 6768 0 0 0.00% 0.00%
D 7692 6767 34 34 0.44% 0.50%

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 17 60883 349.27 853 836 171.9
A 6 16 12127 65.68 853 836 171.9
A 13 254 10384 55.54 853 836 171.9
B 15 222 162700 1005.88 841 820 160.9
B 0 245 25382 152.62 841 820 160.9
B 0 190 23780 142.67 841 820 160.9
C 14 238 130252 675.32 812 816 191.7
C 3 233 63062 324.76 812 816 191.7
C 13 61 5463 24.24 812 816 191.7
D 1 52 162428 803.0 829 805 201.3
D 13 104 96190 473.9 829 805 201.3
D 2 234 29265 141.4 829 805 201.3

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