ASTROSAT CZTI

Data Quality Report

Orbit 17400

Creation date: 2024-06-27T17:36:02.273350
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/AS1T03_030T01_9000002574_17400cztM0_level2.evt modeM0/AS1T03_030T01_9000002574_17400cztM0_level2_quad_clean.evt
Size (bytes)559,572,48090,973,440
Size533.6 MB 86.8 MB
Events in quadrant A3,185,797605,477
Events in quadrant B3,427,336602,590
Events in quadrant C4,274,646566,167
Events in quadrant D5,615,111523,917

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136192
B0142272
C0170532
D0210022

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6542661.008866%
B65431141.742320%
C65421362.078875%
D654285012.992969%

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 7627 6543 0 0 0.00% 0.00%
B 7628 6544 27 27 0.35% 0.41%
C 7627 6543 0 0 0.00% 0.00%
D 7626 6542 728 728 9.55% 11.13%

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 0 226 7056 37.33 829 812 167.3
A 12 194 6168 32.02 829 812 167.3
A 3 137 5911 30.49 829 812 167.3
B 0 197 98210 619.64 822 801 157.2
B 7 220 66261 416.4 822 801 157.2
B 0 189 28597 176.82 822 801 157.2
C 3 233 1027731 5618.63 785 793 182.8
C 14 238 120969 657.51 785 793 182.8
C 5 218 64717 349.74 785 793 182.8
D 11 176 2004596 10696.37 771 751 187.3
D 13 232 458504 2443.45 771 751 187.3
D 13 189 113976 604.39 771 751 187.3

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