ASTROSAT CZTI

Data Quality Report

Orbit 19817

Creation date: 2024-06-27T18:07:27.800668
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/AS1C04_009T06_9000002960_19817cztM0_level2.evt modeM0/AS1C04_009T06_9000002960_19817cztM0_level2_quad_clean.evt
Size (bytes)554,685,120123,304,320
Size529.0 MB 117.6 MB
Events in quadrant A4,495,951820,671
Events in quadrant B3,201,255874,529
Events in quadrant C3,082,676852,836
Events in quadrant D5,590,645745,736

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177802
B0137682
C0134012
D0209703

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63114757.526541%
B6311661.045793%
C6311741.172556%
D631098715.641838%

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 7566 6312 327 327 4.32% 5.18%
B 7566 6312 12 12 0.16% 0.19%
C 7566 6312 5 5 0.07% 0.08%
D 7565 6310 859 859 11.35% 13.61%

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 14 238 1537717 10497.96 731 716 146.4
A 14 254 107729 730.92 731 716 146.4
A 9 143 32420 216.54 731 716 146.4
B 7 220 81223 569.98 761 743 141.2
B 5 172 36845 255.69 761 743 141.2
B 0 190 22506 154.13 761 743 141.2
C 14 238 116151 678.11 736 742 170.2
C 5 112 71607 416.38 736 742 170.2
C 3 233 15576 87.16 736 742 170.2
D 7 238 1280722 7826.93 675 656 163.5
D 7 38 996796 6090.87 675 656 163.5
D 1 52 484272 2957.06 675 656 163.5

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