ASTROSAT CZTI

Data Quality Report

Orbit 35435

Creation date: 2022-04-20T22:20:47.353426
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/AS1A11_097T17_9000005074_35435cztM0_level2.evt modeM0/AS1A11_097T17_9000005074_35435cztM0_level2_quad_clean.evt
Size (bytes)437,676,48068,598,720
Size417.4 MB 65.4 MB
Events in quadrant A2,564,521435,691
Events in quadrant B3,633,137442,537
Events in quadrant C3,976,430425,062
Events in quadrant D2,736,749418,396

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106103
B0141852
C0150942
D0114812

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A507430.059125%
B50741673.291289%
C50743326.543161%
D5074591.162791%

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 7107 5075 0 0 0.00% 0.00%
B 7107 5074 116 116 1.63% 2.29%
C 7107 5074 255 255 3.59% 5.03%
D 7107 5075 40 40 0.56% 0.79%

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 121544 963.06 625 614 125.6
A 13 6 15915 121.85 625 614 125.6
A 13 254 7315 53.37 625 614 125.6
B 5 236 579199 4992.04 618 604 115.9
B 4 251 415635 3580.83 618 604 115.9
B 5 200 86832 743.96 618 604 115.9
C 4 254 747749 5497.61 590 594 135.9
C 0 10 594342 4368.83 590 594 135.9
C 15 214 206137 1512.4 590 594 135.9
D 13 249 142579 972.5 599 583 146.0
D 1 52 86328 587.25 599 583 146.0
D 7 80 57489 389.74 599 583 146.0

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