ASTROSAT CZTI

Data Quality Report

Orbit 14638

Creation date: 2024-06-27T16:57:49.852477
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/AS1A04_043T01_9000002156_14638cztM0_level2.evt modeM0/AS1A04_043T01_9000002156_14638cztM0_level2_quad_clean.evt
Size (bytes)637,257,600115,041,600
Size607.7 MB 109.7 MB
Events in quadrant A4,010,311749,849
Events in quadrant B4,640,276743,331
Events in quadrant C6,251,977728,126
Events in quadrant D3,876,502727,816

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172222
B0190261
C0240421
D0172341

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7699530.688401%
B76992503.247175%
C7699791.026107%
D7699921.194960%

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 8440 7702 0 0 0.00% 0.00%
B 8440 7702 125 125 1.48% 1.62%
C 8440 7702 0 0 0.00% 0.00%
D 8440 7701 27 27 0.32% 0.35%

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 1 162 183012 994.61 906 886 183.1
A 1 178 80299 433.68 906 886 183.1
A 1 161 69257 373.38 906 886 183.1
B 10 16 798194 4598.34 904 879 173.4
B 0 189 139007 796.62 904 879 173.4
B 4 173 46070 260.63 904 879 173.4
C 3 233 2803355 13766.68 879 882 203.6
C 3 234 15913 73.84 879 882 203.6
C 3 232 7849 34.22 879 882 203.6
D 13 122 143657 660.03 876 854 216.4
D 10 70 120638 553.63 876 854 216.4
D 10 199 91540 419.14 876 854 216.4

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