ASTROSAT CZTI

Data Quality Report

Orbit 28548

Creation date: 2024-06-27T19:53:12.859446
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/AS1A10_102T07_9000004102_28548cztM0_level2.evt modeM0/AS1A10_102T07_9000004102_28548cztM0_level2_quad_clean.evt
Size (bytes)593,228,160101,664,000
Size565.7 MB 97.0 MB
Events in quadrant A4,606,887654,261
Events in quadrant B3,685,529668,633
Events in quadrant C3,513,560634,410
Events in quadrant D5,669,450617,210

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0185512
B0156042
C0150112
D0218676

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72522162.978489%
B7252811.116933%
C7252811.116933%
D72513514.840712%

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 7767 7253 157 157 2.02% 2.16%
B 7767 7253 20 20 0.26% 0.28%
C 7767 7252 0 0 0.00% 0.00%
D 7765 7251 310 310 3.99% 4.28%

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 15 174 738246 4150.06 882 864 177.7
A 14 238 454873 2555.21 882 864 177.7
A 13 254 14233 75.24 882 864 177.7
B 4 80 110480 645.75 882 861 169.8
B 10 245 72751 423.49 882 861 169.8
B 12 111 21093 119.18 882 861 169.8
C 14 238 137120 682.15 845 849 199.8
C 7 247 41345 202.71 845 849 199.8
C 3 233 14267 67.17 845 849 199.8
D 1 52 1426905 7087.98 843 819 201.2
D 8 195 781603 3880.68 843 819 201.2
D 2 250 154093 761.81 843 819 201.2

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