ASTROSAT CZTI

Data Quality Report

Orbit 35684

Creation date: 2022-05-05T04:29:11.174485
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/AS1A09_029T04_9000005110_35684cztM0_level2.evt modeM0/AS1A09_029T04_9000005110_35684cztM0_level2_quad_clean.evt
Size (bytes)416,543,04059,325,120
Size397.2 MB 56.6 MB
Events in quadrant A2,361,774375,195
Events in quadrant B2,962,114376,964
Events in quadrant C2,481,953370,117
Events in quadrant D4,473,509327,582

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0101943
B0120012
C0104022
D0167172

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A493680.162075%
B49361693.423825%
C4936220.445705%
D493685917.402755%

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 6968 4937 0 0 0.00% 0.00%
B 6968 4937 124 124 1.78% 2.51%
C 6968 4937 21 21 0.30% 0.43%
D 6968 4937 737 737 10.58% 14.93%

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 136151 1182.96 565 556 114.6
A 13 6 20450 173.56 565 556 114.6
A 7 16 20419 173.29 565 556 114.6
B 5 172 421245 3927.12 558 544 107.1
B 5 255 205576 1913.91 558 544 107.1
B 0 155 41385 381.24 558 544 107.1
C 15 214 209689 1638.59 547 550 127.6
C 0 10 122781 957.67 547 550 127.6
C 9 187 7547 54.82 547 550 127.6
D 13 249 1868048 14801.83 510 496 126.2
D 10 118 200118 1582.16 510 496 126.2
D 12 128 178657 1412.07 510 496 126.2

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