ASTROSAT CZTI

Data Quality Report

Orbit 35114

Creation date: 2022-03-28T17:40:03.573039
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/AS1T05_015T01_9000005026_35114cztM0_level2.evt modeM0/AS1T05_015T01_9000005026_35114cztM0_level2_quad_clean.evt
Size (bytes)558,650,88063,342,720
Size532.8 MB 60.4 MB
Events in quadrant A2,595,330396,913
Events in quadrant B3,316,424403,607
Events in quadrant C3,023,248390,235
Events in quadrant D7,628,540358,819

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109163
B0130312
C0119562
D0263222

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5254100.190331%
B52541933.673392%
C52541152.188809%
D525465412.447659%

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 7017 5255 1 1 0.01% 0.02%
B 7017 5255 108 108 1.54% 2.06%
C 7017 5255 79 79 1.13% 1.50%
D 7017 5255 625 625 8.91% 11.89%

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 10 83 84385 647.13 643 631 129.4
A 13 6 10978 79.95 643 631 129.4
A 13 254 8615 61.69 643 631 129.4
B 0 190 322425 2658.93 628 613 121.0
B 4 232 218689 1801.83 628 613 121.0
B 5 255 165596 1363.15 628 613 121.0
C 0 10 318139 2219.43 615 621 143.1
C 15 214 221770 1545.82 615 621 143.1
C 0 207 63293 438.07 615 621 143.1
D 8 195 4558572 30438.43 608 590 149.7
D 5 223 209613 1395.87 608 590 149.7
D 13 249 182403 1214.16 608 590 149.7

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