ASTROSAT CZTI

Data Quality Report

Orbit 41146

Creation date: 2024-06-27T22:25:01.235550
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_052T04_9000005602_41146cztM0_level2.fits modeM0/AS1A12_052T04_9000005602_41146cztM0_level2_quad_clean.evt
Size (bytes)390,268,80093,003,840
Size372.2 MB 88.7 MB
Events in quadrant A2,970,765636,476
Events in quadrant B4,236,813613,679
Events in quadrant C3,345,883604,074
Events in quadrant D3,446,976560,775

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123433
B0166282
C0136982
D0144732

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5734120.209278%
B57343476.051622%
C5734741.290548%
D57341382.406697%

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 7077 5735 4 4 0.06% 0.07%
B 7077 5735 257 257 3.63% 4.48%
C 7077 5735 67 67 0.95% 1.17%
D 7077 5735 125 125 1.77% 2.18%

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 543587 4237.09 620 606 128.1
A 13 248 13629 101.62 620 606 128.1
A 9 191 12938 96.23 620 606 128.1
B 0 245 1331744 11425.65 601 584 116.5
B 7 202 315053 2699.16 601 584 116.5
B 5 255 123613 1055.99 601 584 116.5
C 9 54 479720 3420.92 599 601 140.1
C 15 214 244921 1744.45 599 601 140.1
C 14 254 150961 1073.57 599 601 140.1
D 13 249 460489 3141.04 596 579 146.4
D 2 16 444804 3033.92 596 579 146.4
D 2 249 146030 993.39 596 579 146.4

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