ASTROSAT CZTI

Data Quality Report

Orbit 15981

Creation date: 2024-06-27T17:16:03.425758
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/AS1T02_104T01_9000002356_15981cztM0_level2.evt modeM0/AS1T02_104T01_9000002356_15981cztM0_level2_quad_clean.evt
Size (bytes)429,373,44099,158,400
Size409.5 MB 94.6 MB
Events in quadrant A2,920,699649,701
Events in quadrant B3,109,070668,297
Events in quadrant C3,042,128643,881
Events in quadrant D3,512,389610,697

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128103
B0132922
C0130642
D0148522

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6171220.356506%
B6171440.713012%
C6171651.053314%
D61712914.715605%

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 7462 6174 1 1 0.01% 0.02%
B 7462 6174 2 2 0.03% 0.03%
C 7462 6174 1 1 0.01% 0.02%
D 7462 6174 191 191 2.56% 3.09%

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 9 143 9990 61.61 755 741 150.1
A 0 226 6576 38.87 755 741 150.1
A 12 194 5550 32.03 755 741 150.1
B 4 216 61158 423.23 764 745 142.7
B 12 111 16138 107.84 764 745 142.7
B 4 173 14800 98.46 764 745 142.7
C 14 238 113823 662.87 739 747 170.6
C 3 233 20590 116.32 739 747 170.6
C 4 238 10869 59.34 739 747 170.6
D 10 70 684211 3858.43 729 709 177.1
D 12 218 34389 190.13 729 709 177.1
D 2 234 25242 138.49 729 709 177.1

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