ASTROSAT CZTI

Data Quality Report

Orbit 47406

Creation date: 2024-07-04T13:09:11.894249
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/AS1A13_053T01_9000006326_47406cztM0_level2.fits modeM0/AS1A13_053T01_9000006326_47406cztM0_level2_quad_clean.evt
Size (bytes)555,595,200121,060,800
Size529.9 MB 115.5 MB
Events in quadrant A7,556,919791,612
Events in quadrant B3,544,083844,716
Events in quadrant C3,462,206805,459
Events in quadrant D5,405,594688,259

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0275282
B0160932
C0160402
D0217532

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76974375.677537%
B76971341.740938%
C76971562.026764%
D76977479.705080%

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 7812 7697 20 20 0.26% 0.26%
B 7812 7698 1 1 0.01% 0.01%
C 7812 7697 4 4 0.05% 0.05%
D 7812 7698 614 614 7.86% 7.98%

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 10 83 3967964 22417.55 852 834 177.0
A 9 191 263278 1483.02 852 834 177.0
A 15 235 28305 155.23 852 834 177.0
B 5 255 37788 217.91 861 832 169.6
B 4 170 34528 198.69 861 832 169.6
B 12 111 22560 128.12 861 832 169.6
C 0 207 52312 251.38 863 863 204.7
C 3 233 17862 83.06 863 863 204.7
C 12 2 16715 77.45 863 863 204.7
D 2 165 1683836 8234.7 821 794 204.4
D 2 249 313270 1528.87 821 794 204.4
D 12 128 221297 1078.87 821 794 204.4

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