ASTROSAT CZTI

Data Quality Report

Orbit 49606

Creation date: 2024-11-30T09:44:18.178423
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/AS1T05_233T01_9000006438_49606cztM0_level2.fits modeM0/AS1T05_233T01_9000006438_49606cztM0_level2_quad_clean.evt
Size (bytes)1,082,148,48042,796,800
Size1.0 GB 40.8 MB
Events in quadrant A15,220,680134,806
Events in quadrant B6,060,748587,131
Events in quadrant C3,530,2403,497
Events in quadrant D14,790,747151,930

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0492903
B0219581
C0148281
D0479411

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58595859100.000000%
B585997516.641065%
C58595859100.000000%
D5859563196.108551%

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 6944 5860 5656 5656 81.45% 96.52%
B 6944 5860 772 772 11.12% 13.17%
C 6943 5857 173 173 2.49% 2.95%
D 6944 5859 5369 5369 77.32% 91.64%

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 0 99 5753986 83899.49 170 160 68.6
A 10 83 2450142 35724.45 170 160 68.6
A 0 98 1400615 20420.75 170 160 68.6
B 5 172 1198400 9480.76 595 579 126.3
B 4 206 1162506 9196.66 595 579 126.3
B 3 232 357332 2823.7 595 579 126.3
C 15 181 1449228 119499.95 13 11 12.1
C 15 180 597738 49287.54 13 11 12.1
C 15 190 172578 14229.58 13 11 12.1
D 15 40 3349062 35397.59 203 189 94.6
D 15 184 1748908 18483.96 203 189 94.6
D 15 74 1166059 12323.25 203 189 94.6

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