ASTROSAT CZTI

Data Quality Report

Orbit 40984

Creation date: 2024-06-27T22:23:00.153786
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/AS1A12_066T01_9000005584_40984cztM0_level2.fits modeM0/AS1A12_066T01_9000005584_40984cztM0_level2_quad_clean.evt
Size (bytes)291,919,68084,274,560
Size278.4 MB 80.4 MB
Events in quadrant A2,685,656578,022
Events in quadrant B2,370,961581,517
Events in quadrant C2,563,969540,607
Events in quadrant D2,802,280507,357

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109553
B0104262
C0106352
D0117162

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4910100.203666%
B4910440.896130%
C4910851.731161%
D49101062.158859%

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 7003 4911 6 6 0.09% 0.12%
B 7003 4911 29 29 0.41% 0.59%
C 7003 4911 81 81 1.16% 1.65%
D 7003 4911 116 116 1.66% 2.36%

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 472644 4121.4 555 544 114.5
A 12 189 56807 491.17 555 544 114.5
A 13 254 7651 62.04 555 544 114.5
B 5 255 180545 1675.59 550 536 107.4
B 0 229 25195 229.53 550 536 107.4
B 12 111 13491 120.59 550 536 107.4
C 0 10 236239 1886.85 536 541 124.9
C 15 214 210230 1678.63 536 541 124.9
C 12 249 16506 127.8 536 541 124.9
D 13 249 437804 3349.33 538 524 130.6
D 1 47 106726 813.45 538 524 130.6
D 2 249 61242 465.07 538 524 130.6

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