ASTROSAT CZTI

Data Quality Report

Orbit 34378

Creation date: 2022-02-05T22:52:00.842461
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/AS1A05_085T01_9000004910_34378cztM0_level2.evt modeM0/AS1A05_085T01_9000004910_34378cztM0_level2_quad_clean.evt
Size (bytes)577,532,16084,257,280
Size550.8 MB 80.4 MB
Events in quadrant A2,549,715598,547
Events in quadrant B3,536,886587,739
Events in quadrant C4,690,666566,880
Events in quadrant D6,372,673444,757

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106042
B0137541
C0174881
D0223771

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A503870.138944%
B50382585.121080%
C50384318.554982%
D5038125324.870981%

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 7072 5039 1 1 0.01% 0.02%
B 7071 5038 192 192 2.72% 3.81%
C 7072 5039 385 385 5.44% 7.64%
D 7072 5039 1195 1195 16.90% 23.72%

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 13 6 28693 222.04 634 626 126.4
A 10 83 21168 162.51 634 626 126.4
A 7 16 20989 161.09 634 626 126.4
B 5 172 724488 6193.9 619 607 116.9
B 4 251 122374 1041.9 619 607 116.9
B 15 85 62905 533.05 619 607 116.9
C 4 254 2067084 15376.74 583 588 134.4
C 15 214 203043 1506.46 583 588 134.4
C 0 10 60665 447.03 583 588 134.4
D 7 223 2045812 16056.61 521 506 127.4
D 8 195 646509 5071.43 521 506 127.4
D 2 249 542801 4257.27 521 506 127.4

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