ASTROSAT CZTI

Data Quality Report

Orbit 23975

Creation date: 2024-06-27T19:00:44.761788
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_065T01_9000003554_23975cztM0_level2.evt modeM0/AS1A07_065T01_9000003554_23975cztM0_level2_quad_clean.evt
Size (bytes)622,707,840106,511,040
Size593.9 MB 101.6 MB
Events in quadrant A3,578,021701,129
Events in quadrant B4,089,047702,696
Events in quadrant C3,700,763673,013
Events in quadrant D6,978,937622,704

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157382
B0170972
C0159552
D0260952

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7562590.780217%
B75622162.856387%
C75621652.181962%
D75626778.952658%

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 7912 7564 0 0 0.00% 0.00%
B 7912 7564 113 113 1.43% 1.49%
C 7912 7564 13 13 0.16% 0.17%
D 7912 7563 464 464 5.86% 6.14%

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 13 254 12684 62.44 927 905 188.6
A 3 137 8520 40.37 927 905 188.6
A 0 226 7960 37.4 927 905 188.6
B 4 200 450754 2533.08 916 891 177.6
B 12 111 21764 117.53 916 891 177.6
B 11 111 19428 104.38 916 891 177.6
C 14 238 140057 663.96 888 892 209.6
C 0 10 90239 426.27 888 892 209.6
C 2 16 6419 26.37 888 892 209.6
D 12 218 1559914 7328.26 872 847 212.7
D 7 238 824046 3869.37 872 847 212.7
D 8 195 591530 2776.45 872 847 212.7

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