ASTROSAT CZTI

Data Quality Report

Orbit 13709

Creation date: 2024-06-27T16:45:03.274292
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/AS1T02_041T01_9000002032_13709cztM0_level2.evt modeM0/AS1T02_041T01_9000002032_13709cztM0_level2_quad_clean.evt
Size (bytes)1,146,942,720336,081,600
Size1.1 GB 320.5 MB
Events in quadrant A7,895,7652,253,532
Events in quadrant B8,314,6032,320,038
Events in quadrant C8,072,4862,289,443
Events in quadrant D9,335,4302,178,733

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0339275
B0350904
C0342644
D0390234

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03360
B03360
C03360
D03360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0450

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A165171570.950536%
B165172261.368287%
C16517830.502513%
D165173732.258279%

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 20108 16521 7 7 0.03% 0.04%
B 20108 16521 22 22 0.11% 0.13%
C 20108 16521 1 1 0.00% 0.01%
D 20108 16521 260 260 1.29% 1.57%

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 15 222 115640 284.43 2007 1968 399.6
A 1 162 26893 62.37 2007 1968 399.6
A 15 69 21769 49.55 2007 1968 399.6
B 0 219 156287 418.86 2011 1965 368.4
B 8 250 104352 277.9 2011 1965 368.4
B 3 64 60363 158.5 2011 1965 368.4
C 3 233 389951 887.65 1946 1955 437.1
C 14 220 39347 85.54 1946 1955 437.1
C 0 207 28450 60.61 1946 1955 437.1
D 9 85 614998 1228.75 1913 1875 499.0
D 2 136 586758 1172.16 1913 1875 499.0
D 1 52 238094 473.4 1913 1875 499.0

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