ASTROSAT CZTI

Data Quality Report

Orbit 42099

Creation date: 2024-06-27T22:36:48.905903
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_088T08_9000005748_42099cztM0_level2.fits modeM0/AS1A12_088T08_9000005748_42099cztM0_level2_quad_clean.evt
Size (bytes)368,470,08082,224,000
Size351.4 MB 78.4 MB
Events in quadrant A5,383,435531,396
Events in quadrant B2,235,267587,643
Events in quadrant C2,304,800546,904
Events in quadrant D3,333,651479,209

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193683
B0100382
C098902
D0133322

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0410
C0410
D0410

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49154358.850458%
B4915150.305188%
C491530.061038%
D49152745.574771%

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 7039 4916 392 392 5.57% 7.97%
B 7039 4916 8 8 0.11% 0.16%
C 7039 4916 0 0 0.00% 0.00%
D 7039 4916 219 219 3.11% 4.45%

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 15 222 2821534 25683.22 533 523 109.8
A 10 83 472064 4293.03 533 523 109.8
A 7 16 16053 141.39 533 523 109.8
B 5 255 61461 579.42 546 531 105.2
B 0 229 17809 164.31 546 531 105.2
B 12 111 13277 121.21 546 531 105.2
C 15 214 204784 1631.95 536 542 125.2
C 15 111 5438 39.12 536 542 125.2
C 13 61 3629 24.67 536 542 125.2
D 13 249 512290 4025.04 516 501 127.2
D 12 6 447591 3516.2 516 501 127.2
D 2 249 181393 1422.65 516 501 127.2

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