ASTROSAT CZTI

Data Quality Report

Orbit 33585

Creation date: 2024-06-27T20:50:27.500733
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_060T01_9000004808_33585cztM0_level2.evt modeM0/AS1A11_060T01_9000004808_33585cztM0_level2_quad_clean.evt
Size (bytes)533,799,36051,344,640
Size509.1 MB 49.0 MB
Events in quadrant A4,549,209278,821
Events in quadrant B4,160,044301,539
Events in quadrant C3,326,789311,806
Events in quadrant D3,782,539302,329

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165113
B0156122
C0129852
D0147512

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A513192518.027675%
B513157011.108946%
C51311312.553109%
D5131701.364256%

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 7104 5132 869 869 12.23% 16.93%
B 7104 5131 459 459 6.46% 8.95%
C 7104 5132 120 120 1.69% 2.34%
D 7104 5132 60 60 0.84% 1.17%

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 2317127 20249.06 563 552 114.4
A 12 16 36860 317.37 563 552 114.4
A 12 194 9775 80.62 563 552 114.4
B 5 172 1690868 14928.98 588 571 113.2
B 15 222 63333 554.32 588 571 113.2
B 0 190 53311 465.81 588 571 113.2
C 0 10 393269 2818.97 602 606 139.3
C 3 233 354525 2540.82 602 606 139.3
C 15 214 216602 1550.66 602 606 139.3
D 8 195 562131 3785.04 600 584 148.4
D 1 52 270106 1816.68 600 584 148.4
D 13 249 188698 1267.96 600 584 148.4

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