ASTROSAT CZTI

Data Quality Report

Orbit 11229

Creation date: 2024-06-27T16:10:02.954740
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/AS1T01_200T01_9000001638_11229cztM0_level2.evt modeM0/AS1T01_200T01_9000001638_11229cztM0_level2_quad_clean.evt
Size (bytes)605,027,520122,852,160
Size577.0 MB 117.2 MB
Events in quadrant A5,351,593804,292
Events in quadrant B3,865,357835,271
Events in quadrant C3,976,741830,041
Events in quadrant D4,687,997795,813

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0204703
B0158412
C0163752
D0183922

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65283385.177696%
B65281983.033088%
C65283885.943627%
D65282323.553922%

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 7643 6529 197 197 2.58% 3.02%
B 7643 6529 93 93 1.22% 1.42%
C 7643 6529 277 277 3.62% 4.24%
D 7643 6529 154 154 2.01% 2.36%

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 8 5 1704530 11205.14 748 732 152.1
A 15 174 576155 3784.31 748 732 152.1
A 8 15 63367 411.92 748 732 152.1
B 4 239 700708 4870.79 765 743 143.7
B 3 189 83327 574.67 765 743 143.7
B 15 204 56864 390.53 765 743 143.7
C 4 254 1004556 5863.29 742 747 171.2
C 7 238 75381 435.94 742 747 171.2
C 13 61 5413 27.25 742 747 171.2
D 8 195 850578 4778.45 743 724 177.9
D 1 52 223510 1252.65 743 724 177.9
D 12 157 210893 1181.71 743 724 177.9

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