ASTROSAT CZTI

Data Quality Report

Orbit 39355

Creation date: 2024-06-27T22:03:36.366887
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_018T01_9000005470_39355cztM0_level2.fits modeM0/AS1A12_018T01_9000005470_39355cztM0_level2_quad_clean.evt
Size (bytes)431,501,76087,756,480
Size411.5 MB 83.7 MB
Events in quadrant A2,717,276609,839
Events in quadrant B2,385,145623,969
Events in quadrant C2,762,772595,931
Events in quadrant D7,684,160446,558

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115962
B0109861
C0117371
D0265991

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A544490.165320%
B544450.091844%
C5444190.349008%
D5444142926.249082%

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 7117 5445 2 2 0.03% 0.04%
B 7117 5445 3 3 0.04% 0.06%
C 7117 5445 15 15 0.21% 0.28%
D 7117 5445 1232 1232 17.31% 22.63%

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 10 83 377319 3084.25 596 583 122.1
A 15 223 12447 97.13 596 583 122.1
A 13 248 10527 81.41 596 583 122.1
B 5 172 35017 298.73 595 577 115.3
B 12 111 14675 122.28 595 577 115.3
B 11 111 13389 111.13 595 577 115.3
C 15 214 245037 1768.77 585 587 138.2
C 9 187 95115 683.98 585 587 138.2
C 14 254 87183 626.58 585 587 138.2
D 12 235 5217866 40953.91 527 513 127.4
D 2 249 193138 1512.02 527 513 127.4
D 13 249 108840 850.32 527 513 127.4

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