ASTROSAT CZTI

Data Quality Report

Orbit 34859

Creation date: 2022-03-10T14:26:46.891203
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/AS1C07_005T01_9000004992_34859cztM0_level2.evt modeM0/AS1C07_005T01_9000004992_34859cztM0_level2_quad_clean.evt
Size (bytes)1,036,440,00080,078,400
Size988.4 MB 76.4 MB
Events in quadrant A10,632,462505,972
Events in quadrant B13,525,179243,313
Events in quadrant C2,961,528680,403
Events in quadrant D3,918,404624,589

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0351533
B0437732
C0116662
D0150942

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5238326462.313860%
B5238520199.293624%
C5238861.641848%
D52382174.142803%

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 7210 5238 2940 2940 40.78% 56.13%
B 7209 5237 5126 5126 71.11% 97.88%
C 7210 5239 79 79 1.10% 1.51%
D 7210 5239 175 175 2.43% 3.34%

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 15 169 8573189 85627.91 497 487 100.1
A 15 237 79640 790.61 497 487 100.1
A 10 83 39568 390.36 497 487 100.1
B 5 31 4822840 99763.69 248 241 48.3
B 5 15 4697282 97166.31 248 241 48.3
B 5 14 2535095 52437.78 248 241 48.3
C 15 214 239641 1723.49 603 607 138.7
C 0 10 216782 1558.67 603 607 138.7
C 0 207 92149 660.04 603 607 138.7
D 12 227 458269 3222.66 591 575 142.0
D 8 195 436232 3067.5 591 575 142.0
D 12 128 228394 1604.09 591 575 142.0

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