ASTROSAT CZTI

Data Quality Report

Orbit 26486

Creation date: 2024-06-27T19:29:37.118812
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/AS1A07_146T01_9000003828_26486cztM0_level2.evt modeM0/AS1A07_146T01_9000003828_26486cztM0_level2_quad_clean.evt
Size (bytes)509,172,48069,330,240
Size485.6 MB 66.1 MB
Events in quadrant A3,315,542427,438
Events in quadrant B3,353,120433,591
Events in quadrant C3,447,346405,795
Events in quadrant D4,871,443386,881

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138190
B0138750
C0141320
D0186380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6384711.112155%
B6384841.315789%
C63831061.660661%
D63844647.268170%

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 7529 6384 0 0 0.00% 0.00%
B 7529 6384 0 0 0.00% 0.00%
C 7528 6383 1 1 0.01% 0.02%
D 7529 6384 349 349 4.64% 5.47%

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 13 254 9876 52.64 860 843 171.6
A 3 137 7518 38.9 860 843 171.6
A 0 226 7418 38.32 860 843 171.6
B 12 111 19030 113.09 847 826 161.0
B 11 111 17178 101.58 847 826 161.0
B 0 190 15403 90.55 847 826 161.0
C 14 238 131499 687.24 813 820 190.2
C 3 233 96017 500.64 813 820 190.2
C 4 254 30090 153.93 813 820 190.2
D 1 52 1144100 5874.78 815 796 194.6
D 7 80 484600 2485.99 815 796 194.6
D 12 233 72527 368.58 815 796 194.6

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