ASTROSAT CZTI

Data Quality Report

Orbit 33684

Creation date: 2024-06-27T20:51:29.998913
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_090T01_9000004812_33684cztM0_level2.evt modeM0/AS1T04_090T01_9000004812_33684cztM0_level2_quad_clean.evt
Size (bytes)498,409,92061,191,360
Size475.3 MB 58.4 MB
Events in quadrant A3,496,037365,939
Events in quadrant B3,304,975379,154
Events in quadrant C3,357,017392,063
Events in quadrant D4,600,128366,958

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135423
B0129572
C0132032
D0172622

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49712595.210219%
B49711883.781935%
C49711653.319252%
D49712535.089519%

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 7093 4972 253 253 3.57% 5.09%
B 7093 4972 165 165 2.33% 3.32%
C 7093 4972 141 141 1.99% 2.84%
D 7093 4972 229 229 3.23% 4.61%

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 15 237 990876 7910.5 642 633 125.2
A 13 6 10817 81.35 642 633 125.2
A 10 83 8892 65.98 642 633 125.2
B 5 172 610887 5104.59 649 636 119.5
B 0 213 62253 515.41 649 636 119.5
B 0 190 27392 223.81 649 636 119.5
C 3 233 387192 2652.77 640 646 145.7
C 0 10 222197 1520.45 640 646 145.7
C 15 214 211718 1448.54 640 646 145.7
D 8 195 745444 4831.3 634 618 154.2
D 15 0 472711 3062.22 634 618 154.2
D 13 249 262141 1696.36 634 618 154.2

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