ASTROSAT CZTI

Data Quality Report

Orbit 23521

Creation date: 2024-06-27T18:55:37.312675
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_112T02_9000003480_23521cztM0_level2.evt modeM0/AS1A07_112T02_9000003480_23521cztM0_level2_quad_clean.evt
Size (bytes)398,171,52085,472,640
Size379.7 MB 81.5 MB
Events in quadrant A2,861,906563,653
Events in quadrant B2,903,197569,831
Events in quadrant C2,893,637536,418
Events in quadrant D3,021,689529,433

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116021
B0117501
C0117671
D0122911

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5558440.791652%
B5558591.061533%
C5558851.529327%
D5558350.629723%

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 6903 5558 0 0 0.00% 0.00%
B 6903 5558 3 3 0.04% 0.05%
C 6903 5559 11 11 0.16% 0.20%
D 6903 5559 4 4 0.06% 0.07%

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 4 2 14495 92.75 739 725 148.5
A 13 254 9103 56.43 739 725 148.5
A 0 226 6508 38.95 739 725 148.5
B 5 172 21756 156.52 723 708 134.5
B 0 189 19180 137.36 723 708 134.5
B 12 111 15442 109.56 723 708 134.5
C 14 238 114088 709.44 690 693 159.8
C 7 247 36872 226.35 690 693 159.8
C 0 10 28953 176.8 690 693 159.8
D 1 52 276686 1606.93 709 689 171.8
D 8 195 28710 163.15 709 689 171.8
D 2 234 22906 129.35 709 689 171.8

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