ASTROSAT CZTI

Data Quality Report

Orbit 38593

Creation date: 2024-06-27T21:53:51.106922
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_052T04_9000005388_38593cztM0_level2.fits modeM0/AS1A12_052T04_9000005388_38593cztM0_level2_quad_clean.evt
Size (bytes)471,620,16092,329,920
Size449.8 MB 88.1 MB
Events in quadrant A2,868,744665,529
Events in quadrant B4,818,739586,933
Events in quadrant C4,749,662633,686
Events in quadrant D4,643,068568,392

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114343
B0174442
C0175612
D0171732

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4871210.431123%
B487182116.854855%
C48712184.475467%
D48713567.308561%

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 7024 4872 7 7 0.10% 0.14%
B 7024 4872 627 627 8.93% 12.87%
C 7024 4872 251 251 3.57% 5.15%
D 7024 4872 398 398 5.67% 8.17%

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 409543 3365.11 611 602 121.5
A 13 248 68857 561.66 611 602 121.5
A 13 6 12371 96.85 611 602 121.5
B 5 184 2166924 20734.86 559 546 104.5
B 5 172 139501 1329.97 559 546 104.5
B 0 183 65817 624.72 559 546 104.5
C 14 254 2082943 15759.13 579 584 132.1
C 15 214 203098 1532.61 579 584 132.1
C 1 23 81394 611.56 579 584 132.1
D 1 20 535656 3840.63 575 560 139.3
D 12 227 509325 3651.64 575 560 139.3
D 1 47 426675 3058.42 575 560 139.3

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