ASTROSAT CZTI

Data Quality Report

Orbit 45618

Creation date: 2024-06-27T23:14:16.013289
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/AS1A13_071T08_9000006114_45618cztM0_level2.fits modeM0/AS1A13_071T08_9000006114_45618cztM0_level2_quad_clean.evt
Size (bytes)516,314,880109,333,440
Size492.4 MB 104.3 MB
Events in quadrant A5,581,056748,648
Events in quadrant B4,130,982749,950
Events in quadrant C3,001,879741,112
Events in quadrant D5,910,060631,370

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0201580
B0162971
C0132430
D0220540

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62991482.349579%
B62993275.191300%
C6299330.523893%
D62995658.969678%

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 7479 6300 3 3 0.04% 0.05%
B 7479 6300 175 175 2.34% 2.78%
C 7479 6300 5 5 0.07% 0.08%
D 7479 6300 469 469 6.27% 7.44%

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 2676287 17535.98 744 728 152.6
A 13 6 13386 82.96 744 728 152.6
A 0 243 9443 57.12 744 728 152.6
B 5 172 577872 4117.04 726 706 140.2
B 3 112 184722 1312.62 726 706 140.2
B 12 18 150087 1065.56 726 706 140.2
C 12 2 79478 466.55 724 730 168.8
C 0 207 44503 259.34 724 730 168.8
C 14 254 36304 210.76 724 730 168.8
D 11 241 1173527 6605.18 706 683 177.6
D 11 224 637158 3584.48 706 683 177.6
D 13 249 449498 2527.62 706 683 177.6

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