ASTROSAT CZTI

Data Quality Report

Orbit 41608

Creation date: 2024-06-27T22:30:40.668504
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_035T02_9000005680_41608cztM0_level2.fits modeM0/AS1A12_035T02_9000005680_41608cztM0_level2_quad_clean.evt
Size (bytes)347,400,00088,873,920
Size331.3 MB 84.8 MB
Events in quadrant A2,830,138604,922
Events in quadrant B2,553,093617,794
Events in quadrant C2,994,669566,830
Events in quadrant D4,065,240526,874

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116362
B0113522
C0121592
D0158413

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5347110.205723%
B5348230.430067%
C53481823.403141%
D53472494.656817%

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 9233 5349 2 2 0.02% 0.04%
B 9234 5350 2 2 0.02% 0.04%
C 9234 5350 171 171 1.85% 3.20%
D 9233 5349 208 208 2.25% 3.89%

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 521928 4315.31 589 578 120.8
A 2 79 18742 150.35 589 578 120.8
A 13 254 9169 71.11 589 578 120.8
B 0 186 182102 1594.36 585 569 113.9
B 0 245 35360 305.56 585 569 113.9
B 12 111 14282 120.44 585 569 113.9
C 0 10 527217 3959.37 568 572 133.0
C 15 214 233821 1753.59 568 572 133.0
C 0 15 10703 76.17 568 572 133.0
D 12 79 886402 6340.84 567 551 139.7
D 13 249 604767 4324.93 567 551 139.7
D 2 249 280060 2000.7 567 551 139.7

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