ASTROSAT CZTI

Data Quality Report

Orbit 32399

Creation date: 2024-06-27T20:39:46.463014
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/AS1T04_059T01_9000004704_32399cztM0_level2.evt modeM0/AS1T04_059T01_9000004704_32399cztM0_level2_quad_clean.evt
Size (bytes)830,462,40071,343,360
Size792.0 MB 68.0 MB
Events in quadrant A3,246,310461,641
Events in quadrant B12,148,361356,018
Events in quadrant C3,744,339448,377
Events in quadrant D5,545,694411,914

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142142
B0409081
C0154751
D0212521

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6910620.897250%
B6910332648.133140%
C69101592.301013%
D69106108.827786%

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 7275 6911 1 1 0.01% 0.01%
B 7275 6911 2208 2208 30.35% 31.95%
C 7275 6911 2 2 0.03% 0.03%
D 7275 6911 503 503 6.91% 7.28%

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 13 254 13934 77.66 838 821 168.8
A 3 137 8467 45.29 838 821 168.8
A 0 226 7099 37.18 838 821 168.8
B 4 80 7016069 50262.1 725 707 139.6
B 6 159 1720506 12321.63 725 707 139.6
B 10 245 202660 1446.91 725 707 139.6
C 3 233 345544 1832.15 797 802 188.2
C 14 238 131883 696.64 797 802 188.2
C 0 10 68161 357.98 797 802 188.2
D 12 227 1307980 6885.78 784 759 189.8
D 12 233 484441 2547.79 784 759 189.8
D 8 195 190503 999.47 784 759 189.8

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