ASTROSAT CZTI

Data Quality Report

Orbit 20230914_A09_006T08_9000005840_level2

Creation date: 2023-09-15T15:18:13.884650
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/AS1A09_006T08_9000005840cztM0_level2.fits modeM0/AS1A09_006T08_9000005840cztM0_level2_quad_clean.evt
Size (bytes)118,756,800108,832,320
Size113.3 MB 103.8 MB
Events in quadrant A730,466666,927
Events in quadrant B653,694570,485
Events in quadrant C718,072645,100
Events in quadrant D575,034494,587

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02700
B02700
C02700
D02700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0650
B0660
C0660
D0660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0331650
B0406580
C0270800
D0533290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A132922301.730364%
B13292161612.157689%
C1329260.045140%
D13292206115.505567%

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 19269 13287 0 0 0.00% 0.00%
B 19269 13249 0 0 0.00% 0.00%
C 19269 13291 0 0 0.00% 0.00%
D 19269 13269 0 0 0.00% 0.00%

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 29 637 9.18 190 179 49.9
A 9 19 617 8.78 190 179 49.9
A 0 30 583 8.1 190 179 49.9
B 2 9 572 11.34 172 164 36.0
B 5 128 463 8.31 172 164 36.0
B 3 17 451 7.97 172 164 36.0
C 1 80 611 8.58 189 178 50.5
C 1 81 608 8.52 189 178 50.5
C 3 203 575 7.86 189 178 50.5
D 6 38 428 6.04 164 149 46.2
D 10 189 424 5.96 164 149 46.2
D 6 62 423 5.94 164 149 46.2

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