ASTROSAT CZTI

Data Quality Report

Orbit 35749

Creation date: 2022-05-09T14:40:02.960944
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_029T07_9000005128_35749cztM0_level2.evt modeM0/AS1A09_029T07_9000005128_35749cztM0_level2_quad_clean.evt
Size (bytes)511,194,24089,899,200
Size487.5 MB 85.7 MB
Events in quadrant A2,733,841600,416
Events in quadrant B2,843,314608,996
Events in quadrant C2,952,505594,320
Events in quadrant D6,571,889526,284

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116783
B0119962
C0121762
D0233452

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5608120.213980%
B5608320.570613%
C5608571.016405%
D560874313.248930%

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 7221 5609 0 0 0.00% 0.00%
B 7221 5609 13 13 0.18% 0.23%
C 7221 5609 38 38 0.53% 0.68%
D 7220 5608 738 738 10.22% 13.16%

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 156731 1176.59 655 642 132.7
A 13 6 17168 124.57 655 642 132.7
A 8 192 15567 112.5 655 642 132.7
B 5 172 137752 1092.95 647 630 125.5
B 0 189 45543 357.99 647 630 125.5
B 5 255 39752 311.83 647 630 125.5
C 15 214 237345 1618.74 632 637 146.2
C 0 10 141646 964.3 632 637 146.2
C 15 208 52687 355.95 632 637 146.2
D 14 52 3479208 23152.72 608 590 150.2
D 14 226 267088 1773.74 608 590 150.2
D 13 249 138309 916.62 608 590 150.2

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