ASTROSAT CZTI

Data Quality Report

Orbit 21884

Creation date: 2024-06-27T18:33:27.241858
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_041T01_9000003234_21884cztM0_level2.evt modeM0/AS1A07_041T01_9000003234_21884cztM0_level2_quad_clean.evt
Size (bytes)425,364,48090,720,000
Size405.7 MB 86.5 MB
Events in quadrant A2,866,574611,076
Events in quadrant B3,038,789617,388
Events in quadrant C2,838,664577,716
Events in quadrant D3,747,500539,465

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122021
B0126891
C0121161
D0151501

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5748350.608907%
B5749460.800139%
C5749480.834928%
D57493085.357453%

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 7058 5749 1 1 0.01% 0.02%
B 7059 5750 6 6 0.08% 0.10%
C 7059 5750 0 0 0.00% 0.00%
D 7059 5750 262 262 3.71% 4.56%

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 10976 69.5 739 725 147.5
A 4 2 7871 48.45 739 725 147.5
A 8 6 7279 44.44 739 725 147.5
B 0 197 41465 295.93 737 722 137.7
B 3 64 32149 228.27 737 722 137.7
B 0 190 29529 209.24 737 722 137.7
C 14 238 113978 710.33 691 695 159.5
C 8 208 26530 162.0 691 695 159.5
C 13 61 4993 26.95 691 695 159.5
D 1 52 883071 5300.41 684 665 166.5
D 7 238 104168 621.72 684 665 166.5
D 13 174 51360 304.51 684 665 166.5

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