ASTROSAT CZTI

Data Quality Report

Orbit 31641

Creation date: 2024-06-27T20:31:03.420706
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/AS1T04_035T01_9000004622_31641cztM0_level2.evt modeM0/AS1T04_035T01_9000004622_31641cztM0_level2_quad_clean.evt
Size (bytes)662,333,76085,438,080
Size631.7 MB 81.5 MB
Events in quadrant A5,288,931557,594
Events in quadrant B5,783,336557,901
Events in quadrant C4,103,880546,688
Events in quadrant D4,488,957516,426

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0196571
B0213491
C0162151
D0173211

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58435369.173370%
B58434597.855554%
C58432924.997433%
D58432414.124594%

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 7133 5844 432 432 6.06% 7.39%
B 7133 5844 311 311 4.36% 5.32%
C 7133 5844 31 31 0.43% 0.53%
D 7133 5844 241 241 3.38% 4.12%

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 0 13 2452378 16653.51 732 719 147.2
A 13 254 11684 74.48 732 719 147.2
A 15 174 9118 57.05 732 719 147.2
B 6 159 1757329 12836.76 726 711 136.8
B 5 172 702565 5128.91 726 711 136.8
B 10 245 274493 2000.7 726 711 136.8
C 3 233 909387 5600.45 698 704 162.3
C 14 238 190756 1171.34 698 704 162.3
C 0 10 127889 783.87 698 704 162.3
D 8 195 816093 4895.66 696 678 166.6
D 13 249 575003 3448.18 696 678 166.6
D 10 199 169694 1014.75 696 678 166.6

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