ASTROSAT CZTI

Data Quality Report

Orbit 22881

Creation date: 2024-06-27T18:46:59.147303
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_049T01_9000003380_22881cztM0_level2.evt modeM0/AS1A07_049T01_9000003380_22881cztM0_level2_quad_clean.evt
Size (bytes)486,771,84068,722,560
Size464.2 MB 65.5 MB
Events in quadrant A3,242,974418,299
Events in quadrant B3,301,599426,800
Events in quadrant C3,284,112405,298
Events in quadrant D4,462,588367,377

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138052
B0139192
C0139182
D0177582

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014027288697127246
B0-1-1
C0-1-1
D0-1-1

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6639430.647688%
B6638500.753239%
C6638791.190118%
D66383805.724616%

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 7699 6640 5 5 0.06% 0.08%
B 7698 6639 1 1 0.01% 0.02%
C 7698 6639 1 1 0.01% 0.02%
D 7698 6639 301 301 3.91% 4.53%

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 23 26173 151.27 833 816 167.6
A 13 254 9861 53.96 833 816 167.6
A 0 226 8733 47.23 833 816 167.6
B 12 111 19406 115.95 834 813 160.4
B 11 111 17061 101.32 834 813 160.4
B 14 111 15300 90.34 834 813 160.4
C 14 238 128148 679.57 802 808 187.4
C 2 16 25573 132.16 802 808 187.4
C 13 61 5503 25.06 802 808 187.4
D 1 52 967237 5064.36 785 764 190.8
D 7 238 281056 1468.74 785 764 190.8
D 12 233 99152 515.56 785 764 190.8

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