ASTROSAT CZTI

Data Quality Report

Orbit 46649

Creation date: 2024-06-27T23:25:54.303750
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/AS1A13_039T01_9000006246_46649cztM0_level2.fits modeM0/AS1A13_039T01_9000006246_46649cztM0_level2_quad_clean.evt
Size (bytes)511,804,800108,708,480
Size488.1 MB 103.7 MB
Events in quadrant A6,309,857715,607
Events in quadrant B4,578,779753,709
Events in quadrant C2,880,374730,220
Events in quadrant D4,656,054624,046

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0231952
B0183162
C0138432
D0188342

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67092363.517663%
B67091241.848264%
C6709260.387539%
D67094466.647787%

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 7879 6710 76 76 0.96% 1.13%
B 7879 6710 38 38 0.48% 0.57%
C 7879 6710 7 7 0.09% 0.10%
D 7878 6709 417 417 5.29% 6.22%

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 3512221 24275.02 702 688 144.7
A 9 191 21550 144.22 702 688 144.7
A 7 3 16897 112.05 702 688 144.7
B 10 128 1252551 9051.95 715 695 138.3
B 0 189 110656 795.11 715 695 138.3
B 5 255 94375 677.38 715 695 138.3
C 12 249 49935 300.69 702 705 163.7
C 14 254 27176 161.68 702 705 163.7
C 12 250 18893 111.09 702 705 163.7
D 1 52 1349019 8054.74 666 645 167.4
D 13 249 267679 1595.17 666 645 167.4
D 2 37 211103 1257.21 666 645 167.4

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