ASTROSAT CZTI

Data Quality Report

Orbit 37423

Creation date: 2024-06-27T21:39:48.229476
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/AS1A09_002T01_9000005322_37423cztM0_level2.evt modeM0/AS1A09_002T01_9000005322_37423cztM0_level2_quad_clean.evt
Size (bytes)408,326,40088,571,520
Size389.4 MB 84.5 MB
Events in quadrant A2,988,830570,695
Events in quadrant B2,742,442581,370
Events in quadrant C2,852,067591,234
Events in quadrant D3,410,232555,448

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121233
B0118062
C0118412
D0138352

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5479330.602300%
B5479430.784815%
C5479410.748312%
D54791402.555211%

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 7062 5480 23 23 0.33% 0.42%
B 7062 5480 33 33 0.47% 0.60%
C 7062 5480 36 36 0.51% 0.66%
D 7062 5480 120 120 1.70% 2.19%

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 289749 2330.03 617 605 124.1
A 15 222 188910 1517.43 617 605 124.1
A 9 143 38844 308.14 617 605 124.1
B 5 172 150583 1297.5 608 593 115.6
B 5 255 56140 480.51 608 593 115.6
B 4 232 35776 304.35 608 593 115.6
C 15 214 235973 1663.11 605 609 141.5
C 14 254 178825 1259.29 605 609 141.5
C 0 10 71320 499.65 605 609 141.5
D 2 249 349817 2377.75 602 586 146.9
D 1 47 202927 1377.64 602 586 146.9
D 13 249 160663 1089.89 602 586 146.9

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