ASTROSAT CZTI

Data Quality Report

Orbit 18601

Creation date: 2024-06-27T17:52:01.844891
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/AS1A05_075T01_9000002768_18601cztM0_level2.evt modeM0/AS1A05_075T01_9000002768_18601cztM0_level2_quad_clean.evt
Size (bytes)468,080,640109,376,640
Size446.4 MB 104.3 MB
Events in quadrant A3,275,469712,390
Events in quadrant B3,355,343736,114
Events in quadrant C3,440,653717,319
Events in quadrant D3,661,769692,653

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139692
B0141642
C0143442
D0152282

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65131011.550745%
B65131462.241671%
C65141612.471600%
D65142023.101013%

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 9143 6515 0 0 0.00% 0.00%
B 9143 6515 2 2 0.02% 0.03%
C 9144 6515 1 1 0.01% 0.02%
D 9144 6516 45 45 0.49% 0.69%

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 15 192 13884 77.77 844 826 167.9
A 12 96 12173 67.58 844 826 167.9
A 13 254 9207 49.91 844 826 167.9
B 12 111 18884 113.41 850 829 159.2
B 11 111 16647 99.36 850 829 159.2
B 0 229 14929 88.57 850 829 159.2
C 14 238 129019 667.11 833 842 192.1
C 3 233 33772 171.39 833 842 192.1
C 9 221 18328 91.01 833 842 192.1
D 1 52 458172 2328.34 832 810 196.4
D 7 238 32012 158.84 832 810 196.4
D 2 234 24631 121.27 832 810 196.4

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