ASTROSAT CZTI

Data Quality Report

Orbit 11497

Creation date: 2024-06-27T16:13:49.176655
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/AS1A04_021T05_9000001686_11497cztM0_level2.evt modeM0/AS1A04_021T05_9000001686_11497cztM0_level2_quad_clean.evt
Size (bytes)963,529,920112,550,400
Size918.9 MB 107.3 MB
Events in quadrant A10,312,291649,973
Events in quadrant B8,685,661684,652
Events in quadrant C3,811,537799,564
Events in quadrant D5,817,598702,388

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0363904
B0313273
C0171043
D0228343

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8211210125.587626%
B8211169320.618682%
C8211400.487151%
D82116517.928389%

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 8752 8217 1290 1290 14.74% 15.70%
B 8752 8217 1264 1264 14.44% 15.38%
C 8752 8217 1 1 0.01% 0.01%
D 8752 8217 463 463 5.29% 5.63%

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 8 5 6600768 36264.97 886 866 182.0
A 15 174 105418 574.49 886 866 182.0
A 9 143 57795 312.81 886 866 182.0
B 4 81 3914446 22498.3 905 882 173.9
B 4 239 808923 4645.27 905 882 173.9
B 11 51 307447 1762.38 905 882 173.9
C 13 61 7067 26.64 976 982 228.4
C 12 4 3939 12.95 976 982 228.4
C 14 67 2491 6.61 976 982 228.4
D 1 52 1527334 6774.01 931 905 225.3
D 2 120 237105 1048.21 931 905 225.3
D 8 195 187804 829.42 931 905 225.3

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