ASTROSAT CZTI

Data Quality Report

Orbit 35669

Creation date: 2024-06-27T21:16:25.081677
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_029T02_9000005106_35669cztM0_level2.evt modeM0/AS1A09_029T02_9000005106_35669cztM0_level2_quad_clean.evt
Size (bytes)395,593,92062,579,520
Size377.3 MB 59.7 MB
Events in quadrant A2,473,921395,679
Events in quadrant B2,887,116401,079
Events in quadrant C3,232,794376,496
Events in quadrant D3,047,332371,534

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105533
B0116772
C0127102
D0124002

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A498790.180469%
B49871182.366152%
C49872665.333868%
D49871533.067977%

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 7079 4988 2 2 0.03% 0.04%
B 7079 4988 88 88 1.24% 1.76%
C 7079 4988 217 217 3.07% 4.35%
D 7079 4988 123 123 1.74% 2.47%

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 137208 1160.74 582 572 117.7
A 7 16 49795 418.16 582 572 117.7
A 15 169 20721 171.17 582 572 117.7
B 5 172 469263 4250.74 579 566 110.3
B 5 255 74592 671.36 579 566 110.3
B 5 200 29259 260.22 579 566 110.3
C 0 10 436616 3365.68 555 559 129.6
C 9 187 288191 2220.07 555 559 129.6
C 15 214 203881 1569.33 555 559 129.6
D 13 249 473506 3494.15 557 542 135.4
D 8 195 84733 621.98 557 542 135.4
D 2 249 83488 612.79 557 542 135.4

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