ASTROSAT CZTI

Data Quality Report

Orbit 13456

Creation date: 2024-06-27T16:41:04.740596
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/AS1A04_103T01_9000001988_13456cztM0_level2.evt modeM0/AS1A04_103T01_9000001988_13456cztM0_level2_quad_clean.evt
Size (bytes)450,633,60082,630,080
Size429.8 MB 78.8 MB
Events in quadrant A3,115,604513,532
Events in quadrant B3,592,012521,893
Events in quadrant C3,156,807513,330
Events in quadrant D3,329,044487,815

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136373
B0148632
C0137092
D0144742

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6670550.824588%
B66702263.388306%
C6670490.734633%
D6671811.214211%

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 7646 6671 0 0 0.00% 0.00%
B 7646 6671 163 163 2.13% 2.44%
C 7646 6671 0 0 0.00% 0.00%
D 7647 6672 33 33 0.43% 0.49%

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 0 226 7148 38.76 807 789 164.1
A 1 162 6623 35.56 807 789 164.1
A 12 194 6131 32.56 807 789 164.1
B 3 64 432518 2845.72 794 773 151.7
B 0 214 25763 164.71 794 773 151.7
B 3 209 22230 141.43 794 773 151.7
C 3 233 58304 312.08 794 798 184.3
C 13 61 5601 26.07 794 798 184.3
C 14 234 3272 13.43 794 798 184.3
D 13 104 159830 845.84 786 763 188.1
D 12 110 76068 400.43 786 763 188.1
D 8 195 60290 316.53 786 763 188.1

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