ASTROSAT CZTI

Data Quality Report

Orbit 18246

Creation date: 2024-06-27T17:47:19.967091
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_019T01_9000002718_18246cztM0_level2.evt modeM0/AS1A05_019T01_9000002718_18246cztM0_level2_quad_clean.evt
Size (bytes)1,251,691,200228,764,160
Size1.2 GB 218.2 MB
Events in quadrant A9,286,3381,444,370
Events in quadrant B8,889,7541,466,190
Events in quadrant C8,442,8961,392,323
Events in quadrant D10,044,9581,358,314

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400473
B0385123
C0372514
D0427253

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03740
B03740
C03740
D03740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A183882171.180117%
B183891190.647126%
C18388980.532956%
D183884362.371112%

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 20313 18390 132 132 0.65% 0.72%
B 20314 18391 34 34 0.17% 0.18%
C 20313 18390 0 0 0.00% 0.00%
D 20313 18390 306 306 1.51% 1.66%

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 703898 1591.85 2165 2116 440.9
A 8 255 249826 561.88 2165 2116 440.9
A 0 226 18507 37.18 2165 2116 440.9
B 5 172 127868 305.5 2162 2107 411.7
B 7 220 120126 286.69 2162 2107 411.7
B 0 197 78887 186.52 2162 2107 411.7
C 14 238 322199 659.05 2076 2090 485.7
C 4 223 17084 30.87 2076 2090 485.7
C 13 61 14854 26.28 2076 2090 485.7
D 1 52 1251449 2469.45 2090 2029 505.9
D 7 238 490594 965.64 2090 2029 505.9
D 13 104 108480 210.4 2090 2029 505.9

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