ASTROSAT CZTI

Data Quality Report

Orbit 31976

Creation date: 2024-06-27T20:34:59.595671
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/AS1C06_010T03_9000004672_31976cztM0_level2.evt modeM0/AS1C06_010T03_9000004672_31976cztM0_level2_quad_clean.evt
Size (bytes)621,120,960121,705,920
Size592.3 MB 116.1 MB
Events in quadrant A2,857,381879,229
Events in quadrant B5,533,065828,139
Events in quadrant C4,045,103799,238
Events in quadrant D5,999,823790,135

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115481
B0203591
C0152471
D0218101

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5564651.168224%
B556567112.057502%
C55654558.176101%
D55653275.876011%

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 6884 5564 0 0 0.00% 0.00%
B 6885 5565 462 462 6.71% 8.30%
C 6885 5565 276 276 4.01% 4.96%
D 6885 5565 241 241 3.50% 4.33%

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 13 254 10241 65.38 740 728 145.5
A 3 137 6637 40.61 740 728 145.5
A 0 226 6386 38.89 740 728 145.5
B 6 159 1404318 11136.24 695 681 126.0
B 10 245 1090468 8646.2 695 681 126.0
B 0 190 129136 1019.14 695 681 126.0
C 0 10 1180147 7569.67 678 684 155.8
C 14 238 112898 720.18 678 684 155.8
C 3 233 81099 516.09 678 684 155.8
D 11 164 2285554 14026.94 700 683 162.9
D 7 238 292575 1791.94 700 683 162.9
D 12 218 191062 1168.75 700 683 162.9

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