ASTROSAT CZTI

Data Quality Report

Orbit 36497

Creation date: 2022-06-29T02:12:39.719802
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/AS1A11_049T05_9000005212_36497cztM0_level2.evt modeM0/AS1A11_049T05_9000005212_36497cztM0_level2_quad_clean.evt
Size (bytes)439,329,60070,280,640
Size419.0 MB 67.0 MB
Events in quadrant A2,781,887446,283
Events in quadrant B2,988,426443,602
Events in quadrant C3,142,238427,827
Events in quadrant D4,007,247413,533

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119583
B0126682
C0128872
D0158202

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5671210.370305%
B5671370.652442%
C56711081.904426%
D56712334.108623%

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 7073 5672 7 7 0.10% 0.12%
B 7073 5672 15 15 0.21% 0.26%
C 7073 5672 89 89 1.26% 1.57%
D 7073 5672 303 303 4.28% 5.34%

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 207175 1582.21 643 632 130.5
A 9 143 42630 321.72 643 632 130.5
A 7 3 24631 183.84 643 632 130.5
B 5 172 159207 1282.56 638 621 123.6
B 5 255 91827 737.63 638 621 123.6
B 0 189 76779 615.93 638 621 123.6
C 0 10 458867 3219.08 614 618 142.4
C 15 214 241200 1690.03 614 618 142.4
C 0 207 23114 158.03 614 618 142.4
D 12 227 1069840 6998.45 619 602 152.8
D 13 249 182337 1189.5 619 602 152.8
D 2 250 82879 538.52 619 602 152.8

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