ASTROSAT CZTI

Data Quality Report

Orbit 10787

Creation date: 2024-06-27T16:03:53.926318
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/AS1G07_062T01_9000001560_10787cztM0_level2.evt modeM0/AS1G07_062T01_9000001560_10787cztM0_level2_quad_clean.evt
Size (bytes)608,359,680131,247,360
Size580.2 MB 125.2 MB
Events in quadrant A3,425,736878,638
Events in quadrant B5,915,485846,132
Events in quadrant C3,264,004901,040
Events in quadrant D5,317,627834,343

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155483
B0228222
C0151332
D0206662

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7393600.811579%
B739399413.445151%
C7393290.392263%
D73933664.950629%

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 7733 7394 25 25 0.32% 0.34%
B 7733 7394 501 501 6.48% 6.78%
C 7733 7394 3 3 0.04% 0.04%
D 7733 7394 236 236 3.05% 3.19%

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 15 174 132800 782.58 836 817 168.7
A 13 248 26290 151.04 836 817 168.7
A 11 29 14813 82.99 836 817 168.7
B 4 239 2604601 17051.4 805 783 152.7
B 0 219 60451 390.74 805 783 152.7
B 0 85 38954 249.97 805 783 152.7
C 0 207 9973 47.35 827 829 193.1
C 8 128 9776 46.33 827 829 193.1
C 8 112 7111 32.53 827 829 193.1
D 8 195 637411 3325.54 801 777 191.4
D 10 199 299792 1561.94 801 777 191.4
D 13 104 265622 1383.45 801 777 191.4

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