ASTROSAT CZTI

Data Quality Report

Orbit 33490

Creation date: 2024-06-27T20:49:24.743098
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_9000004804_33490cztM0_level2.evt modeM0/AS1A11_060T01_9000004804_33490cztM0_level2_quad_clean.evt
Size (bytes)472,754,88075,741,120
Size450.9 MB 72.2 MB
Events in quadrant A2,552,533496,870
Events in quadrant B4,403,039465,845
Events in quadrant C3,137,604478,144
Events in quadrant D3,844,569461,117

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113073
B0167202
C0127912
D0151202

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5595110.196604%
B55955349.544236%
C5595460.822163%
D55951011.805183%

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 7177 5596 0 0 0.00% 0.00%
B 7177 5596 448 448 6.24% 8.01%
C 7177 5596 36 36 0.50% 0.64%
D 7177 5596 101 101 1.41% 1.80%

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 11905 84.68 657 643 133.0
A 13 254 8860 61.79 657 643 133.0
A 3 137 6797 46.27 657 643 133.0
B 5 255 1458758 11764.29 631 616 123.9
B 5 172 341522 2750.43 631 616 123.9
B 4 171 47698 379.86 631 616 123.9
C 15 214 242400 1653.27 630 636 146.2
C 0 10 119830 815.09 630 636 146.2
C 3 233 114104 775.93 630 636 146.2
D 8 195 750798 4798.95 628 608 156.3
D 13 249 282855 1805.53 628 608 156.3
D 2 250 134453 856.2 628 608 156.3

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