ASTROSAT CZTI

Data Quality Report

Orbit 20003

Creation date: 2024-06-27T18:09:56.623455
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/AS1A06_002T02_9000002982_20003cztM0_level2.evt modeM0/AS1A06_002T02_9000002982_20003cztM0_level2_quad_clean.evt
Size (bytes)585,673,92070,536,960
Size558.5 MB 67.3 MB
Events in quadrant A4,076,111426,907
Events in quadrant B3,788,794439,857
Events in quadrant C3,712,591416,980
Events in quadrant D5,728,530407,766

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162432
B0155112
C0151662
D0210402

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63682493.910176%
B63681332.088568%
C63681271.994347%
D636887213.693467%

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 7703 6369 119 119 1.54% 1.87%
B 7703 6369 13 13 0.17% 0.20%
C 7703 6369 0 0 0.00% 0.00%
D 7703 6369 632 632 8.20% 9.92%

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 14 238 290914 1625.11 907 894 178.5
A 5 16 279085 1558.83 907 894 178.5
A 13 252 10408 53.31 907 894 178.5
B 7 220 110262 652.58 903 885 167.6
B 0 245 29572 171.16 903 885 167.6
B 0 197 28659 165.71 903 885 167.6
C 14 238 141476 709.81 870 879 198.1
C 3 233 74571 372.04 870 879 198.1
C 0 207 67445 336.06 870 879 198.1
D 2 184 1038556 5146.49 846 824 201.6
D 12 218 1010005 5004.9 846 824 201.6
D 7 238 205612 1015.62 846 824 201.6

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