ASTROSAT CZTI

Data Quality Report

Orbit 48447

Creation date: 2024-09-12T14:08:26.752082
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_029T01_9000006426_48447cztM0_level2.fits modeM0/AS1A13_029T01_9000006426_48447cztM0_level2_quad_clean.evt
Size (bytes)471,988,800111,516,480
Size450.1 MB 106.4 MB
Events in quadrant A7,528,092717,560
Events in quadrant B3,123,912779,774
Events in quadrant C3,076,012743,781
Events in quadrant D3,232,955676,834

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0276042
B0137192
C0137492
D0142552

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65794807.295942%
B6579911.383189%
C6579520.790394%
D6579851.291990%

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 7699 6580 229 229 2.97% 3.48%
B 7699 6580 4 4 0.05% 0.06%
C 7699 6580 17 17 0.22% 0.26%
D 7699 6580 39 39 0.51% 0.59%

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 4114384 26595.78 745 729 154.7
A 13 248 492218 3177.6 745 729 154.7
A 7 3 24823 155.77 745 729 154.7
B 12 16 61253 404.47 757 734 149.6
B 7 221 19530 125.62 757 734 149.6
B 12 111 18485 118.64 757 734 149.6
C 12 2 58953 328.85 751 755 177.0
C 12 250 46122 256.35 751 755 177.0
C 14 254 16684 90.01 751 755 177.0
D 5 222 81568 432.98 751 729 186.7
D 7 96 58345 308.59 751 729 186.7
D 12 2 41487 218.3 751 729 186.7

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