ASTROSAT CZTI

Data Quality Report

Orbit 43541

Creation date: 2024-06-27T22:52:57.503705
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/AS1A12_102T01_9000005876_43541cztM0_level2.fits modeM0/AS1A12_102T01_9000005876_43541cztM0_level2_quad_clean.evt
Size (bytes)1,734,675,84069,275,520
Size1.6 GB 66.1 MB
Events in quadrant A12,097,710750,945
Events in quadrant B16,201,072490,848
Events in quadrant C19,957,631259,910
Events in quadrant D15,364,28248,326

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0413631
B0534231
C0644421
D0509591

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7709271535.218576%
B7709546370.865222%
C7710758198.326848%
D77107710100.000000%

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 8114 7710 1828 1828 22.53% 23.71%
B 8113 7708 4922 4922 60.67% 63.86%
C 8114 7709 7115 7115 87.69% 92.29%
D 8114 7709 4446 4446 54.79% 57.67%

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 0 228 5491858 34301.73 768 754 160.1
A 0 227 1003543 6264.2 768 754 160.1
A 10 83 810048 5055.48 768 754 160.1
B 3 42 12000640 119402.21 517 504 100.5
B 3 25 975685 9703.12 517 504 100.5
B 5 235 397538 3950.52 517 504 100.5
C 15 174 6481797 96884.2 280 282 66.9
C 15 142 6403110 95708.0 280 282 66.9
C 15 158 2325970 34763.85 280 282 66.9
D 4 216 9797694 267969.55 75 70 36.6
D 4 201 1739588 47576.62 75 70 36.6
D 4 212 901217 24646.79 75 70 36.6

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