ASTROSAT CZTI

Data Quality Report

Orbit 39628

Creation date: 2024-06-27T22:07:01.286100
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_018T01_9000005488_39628cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39628cztM0_level2_quad_clean.evt
Size (bytes)505,952,64098,688,960
Size482.5 MB 94.1 MB
Events in quadrant A3,349,332690,489
Events in quadrant B2,735,157708,656
Events in quadrant C6,250,650633,631
Events in quadrant D5,897,589509,687

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138573
B0129481
C0230401
D0222001

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6383140.219333%
B638460.093985%
C63845759.006892%
D6384122419.172932%

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 7696 6385 6 6 0.08% 0.09%
B 7696 6385 3 3 0.04% 0.05%
C 7696 6385 558 558 7.25% 8.74%
D 7696 6385 989 989 12.85% 15.49%

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 461643 3337.6 680 665 138.1
A 15 222 227552 1642.72 680 665 138.1
A 15 223 20417 143.01 680 665 138.1
B 5 255 62108 472.07 675 657 130.2
B 5 172 17688 130.83 675 657 130.2
B 12 111 16538 122.0 675 657 130.2
C 9 187 2286712 15330.93 643 644 149.1
C 15 208 1182539 7926.08 643 644 149.1
C 15 214 259658 1737.01 643 644 149.1
D 13 249 1640161 11239.43 593 574 145.9
D 13 174 1589739 10893.79 593 574 145.9
D 13 171 127386 869.3 593 574 145.9

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