ASTROSAT CZTI

Data Quality Report

Orbit 47575

Creation date: 2024-07-15T18:06:35.560581
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/AS1C09_002T01_9000006334_47575cztM0_level2.fits modeM0/AS1C09_002T01_9000006334_47575cztM0_level2_quad_clean.evt
Size (bytes)706,996,80089,832,960
Size674.2 MB 85.7 MB
Events in quadrant A6,828,428673,565
Events in quadrant B2,915,679711,521
Events in quadrant C2,635,144689,210
Events in quadrant D13,331,147230,758

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0247681
B0126701
C0121291
D0436341

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59413485.857600%
B5942560.942444%
C5942170.286099%
D5942409468.899360%

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 7141 5941 174 174 2.44% 2.93%
B 7142 5942 18 18 0.25% 0.30%
C 7142 5942 4 4 0.06% 0.07%
D 7141 5941 4276 4276 59.88% 71.97%

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 3494884 24972.58 675 660 139.9
A 9 191 633071 4519.73 675 660 139.9
A 13 248 85631 607.27 675 660 139.9
B 0 200 104942 791.11 677 658 131.8
B 5 32 59045 442.93 677 658 131.8
B 0 190 25283 186.8 677 658 131.8
C 14 254 16601 102.58 665 670 155.3
C 12 250 11237 68.04 665 670 155.3
C 3 233 10327 62.18 665 670 155.3
D 2 165 7794921 63398.54 480 462 122.9
D 6 112 2704725 21995.93 480 462 122.9
D 2 249 440664 3580.51 480 462 122.9

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