ASTROSAT CZTI

Data Quality Report

Orbit 38279

Creation date: 2024-06-27T21:50:41.261151
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/AS1A07_145T01_9000005370_38279cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38279cztM0_level2_quad_clean.evt
Size (bytes)467,193,600106,698,240
Size445.6 MB 101.8 MB
Events in quadrant A3,375,176718,928
Events in quadrant B2,987,156739,005
Events in quadrant C3,587,898704,025
Events in quadrant D6,844,447620,091

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138493
B0131742
C0146792
D0252412

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6433170.264262%
B6433160.248718%
C6433620.963781%
D64335017.787968%

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 9118 6435 15 15 0.16% 0.23%
B 9118 6435 3 3 0.03% 0.05%
C 9118 6435 60 60 0.66% 0.93%
D 9118 6435 466 466 5.11% 7.24%

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 425779 2901.35 725 710 146.5
A 12 189 54545 367.46 725 710 146.5
A 9 143 51356 345.69 725 710 146.5
B 5 172 72774 510.78 720 699 141.1
B 0 189 31498 218.27 720 699 141.1
B 12 111 17870 121.69 720 699 141.1
C 9 236 409089 2481.09 705 708 164.6
C 15 214 268950 1629.68 705 708 164.6
C 2 16 95721 577.24 705 708 164.6
D 10 203 2081908 12418.17 689 671 167.6
D 1 20 555561 3310.88 689 671 167.6
D 12 235 465858 2775.64 689 671 167.6

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