ASTROSAT CZTI

Data Quality Report

Orbit 19468

Creation date: 2024-06-27T18:03:12.461761
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_229T02_9000002890_19468cztM0_level2.evt modeM0/AS1A05_229T02_9000002890_19468cztM0_level2_quad_clean.evt
Size (bytes)515,977,92075,291,840
Size492.1 MB 71.8 MB
Events in quadrant A3,586,557466,797
Events in quadrant B3,612,246470,682
Events in quadrant C3,665,826445,318
Events in quadrant D4,317,275440,110

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146262
B0146482
C0148732
D0171222

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65481181.802077%
B65491301.985036%
C65491382.107192%
D65492583.939533%

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 7828 6548 2 2 0.03% 0.03%
B 7829 6549 2 2 0.03% 0.03%
C 7829 6549 0 0 0.00% 0.00%
D 7829 6549 133 133 1.70% 2.03%

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 5 16 21058 110.24 920 905 182.8
A 11 29 10784 54.04 920 905 182.8
A 3 1 9686 48.03 920 905 182.8
B 0 198 20562 117.11 902 883 168.0
B 12 111 18885 107.13 902 883 168.0
B 0 230 18768 106.44 902 883 168.0
C 14 238 138931 699.57 865 872 197.3
C 3 233 94359 473.71 865 872 197.3
C 9 221 51121 254.62 865 872 197.3
D 7 238 313146 1466.4 883 861 213.0
D 1 52 298468 1397.48 883 861 213.0
D 12 225 272946 1277.63 883 861 213.0

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