ASTROSAT CZTI

Data Quality Report

Orbit 42488

Creation date: 2024-06-27T22:40:45.581475
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/AS1C07_001T10_9000005806_42488cztM0_level2.fits modeM0/AS1C07_001T10_9000005806_42488cztM0_level2_quad_clean.evt
Size (bytes)331,680,96086,201,280
Size316.3 MB 82.2 MB
Events in quadrant A2,883,535599,113
Events in quadrant B3,609,989562,630
Events in quadrant C2,368,126571,820
Events in quadrant D3,025,433524,959

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114862
B0141622
C0101402
D0124422

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5011160.319298%
B50114699.359409%
C501040.079840%
D50101533.053892%

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 7043 5012 8 8 0.11% 0.16%
B 7043 5012 318 318 4.52% 6.34%
C 7042 5011 3 3 0.04% 0.06%
D 7042 5011 128 128 1.82% 2.55%

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 545063 4745.9 564 553 114.7
A 12 189 92493 801.34 564 553 114.7
A 7 3 50215 432.85 564 553 114.7
B 5 255 1390061 13575.57 537 524 102.4
B 5 172 71107 689.59 537 524 102.4
B 15 85 19678 187.13 537 524 102.4
C 15 214 213552 1727.7 538 542 123.3
C 4 254 17612 138.45 538 542 123.3
C 14 254 12465 96.71 538 542 123.3
D 12 0 283792 2159.93 540 525 131.1
D 12 233 185199 1408.15 540 525 131.1
D 2 249 77386 586.07 540 525 131.1

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