ASTROSAT CZTI

Data Quality Report

Orbit 40411

Creation date: 2024-06-27T22:15:45.370445
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_056T02_9000005538_40411cztM0_level2.fits modeM0/AS1A12_056T02_9000005538_40411cztM0_level2_quad_clean.evt
Size (bytes)1,021,616,640174,643,200
Size974.3 MB 166.6 MB
Events in quadrant A7,565,7291,254,927
Events in quadrant B8,152,1061,326,529
Events in quadrant C5,728,1341,289,739
Events in quadrant D15,456,856601,753

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0298543
B0325003
C0242923
D0541903

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02400
B02400
C02400
D02400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A117775434.610682%
B117772632.233166%
C11777290.246243%
D11777622252.831791%

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 15774 11780 282 282 1.79% 2.39%
B 15774 11780 144 144 0.91% 1.22%
C 15774 11780 18 18 0.11% 0.15%
D 15774 11780 2920 2920 18.51% 24.79%

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 15 235 989636 3822.05 1279 1253 258.6
A 10 83 935681 3613.41 1279 1253 258.6
A 13 248 646375 2494.67 1279 1253 258.6
B 7 202 1929403 7895.08 1280 1245 244.2
B 5 255 839913 3434.03 1280 1245 244.2
B 4 171 135046 547.86 1280 1245 244.2
C 15 214 504206 1697.54 1274 1284 296.3
C 14 254 214542 719.82 1274 1284 296.3
C 9 54 17338 54.19 1274 1284 296.3
D 2 250 9476179 42793.48 892 866 221.4
D 12 227 1050018 4738.3 892 866 221.4
D 13 171 501076 2259.11 892 866 221.4

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