ASTROSAT CZTI

Data Quality Report

Orbit 35119

Creation date: 2022-03-28T19:00:59.589530
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/AS1T05_015T01_9000005026_35119cztM0_level2.evt modeM0/AS1T05_015T01_9000005026_35119cztM0_level2_quad_clean.evt
Size (bytes)701,184,96078,356,160
Size668.7 MB 74.7 MB
Events in quadrant A9,366,052459,938
Events in quadrant B2,745,149539,569
Events in quadrant C2,814,320541,047
Events in quadrant D5,977,993485,456

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0312353
B0111552
C0112142
D0212242

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4936205841.693679%
B4936621.256078%
C4936601.215559%
D49364118.326580%

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 6999 4937 1935 1935 27.65% 39.19%
B 6999 4937 36 36 0.51% 0.73%
C 6999 4937 24 24 0.34% 0.49%
D 6999 4937 384 384 5.49% 7.78%

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 15 169 7142092 63785.82 555 545 112.0
A 10 83 72520 642.86 555 545 112.0
A 13 6 8153 67.95 555 545 112.0
B 3 112 89018 767.44 608 594 115.2
B 0 190 79970 688.91 608 594 115.2
B 5 172 64620 555.69 608 594 115.2
C 15 214 210827 1520.12 603 609 138.3
C 0 10 186777 1346.21 603 609 138.3
C 14 67 42094 299.99 603 609 138.3
D 8 195 2896037 20274.45 586 572 142.8
D 13 249 316655 2213.26 586 572 142.8
D 7 80 236923 1654.96 586 572 142.8

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