ASTROSAT CZTI

Data Quality Report

Orbit 15680

Creation date: 2024-06-27T17:12:02.182883
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/AS1T02_084T01_9000002318_15680cztM0_level2.evt modeM0/AS1T02_084T01_9000002318_15680cztM0_level2_quad_clean.evt
Size (bytes)464,751,36097,640,640
Size443.2 MB 93.1 MB
Events in quadrant A3,411,645619,585
Events in quadrant B3,418,575633,378
Events in quadrant C3,256,679619,450
Events in quadrant D3,521,708606,694

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147432
B0145711
C0142511
D0151491

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68572002.916727%
B68571061.545866%
C68571161.691702%
D68571131.647951%

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 7103 6859 83 83 1.17% 1.21%
B 7103 6859 0 0 0.00% 0.00%
C 7103 6859 3 3 0.04% 0.04%
D 7103 6859 42 42 0.59% 0.61%

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 13 248 257715 1534.83 818 799 167.4
A 13 210 9174 50.03 818 799 167.4
A 0 226 7324 38.98 818 799 167.4
B 4 173 77078 484.25 821 802 157.5
B 0 214 35669 221.36 821 802 157.5
B 12 111 18025 109.34 821 802 157.5
C 14 238 121110 653.28 790 793 184.2
C 9 54 31936 169.09 790 793 184.2
C 3 233 11426 57.73 790 793 184.2
D 1 52 226089 1140.99 805 780 197.5
D 12 110 150989 760.67 805 780 197.5
D 2 120 46011 229.05 805 780 197.5

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