ASTROSAT CZTI

Data Quality Report

Orbit 46171

Creation date: 2024-06-27T23:19:58.711612
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_194T01_9000006180_46171cztM0_level2.fits modeM0/AS1T05_194T01_9000006180_46171cztM0_level2_quad_clean.evt
Size (bytes)518,463,360104,826,240
Size494.4 MB 100.0 MB
Events in quadrant A5,680,591717,251
Events in quadrant B3,951,226733,545
Events in quadrant C3,282,295682,693
Events in quadrant D5,793,303604,302

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210601
B0160191
C0142381
D0216011

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62531482.366864%
B62541332.126639%
C62541041.662936%
D62544757.595139%

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 7453 6254 36 36 0.48% 0.58%
B 7454 6255 64 64 0.86% 1.02%
C 7454 6255 78 78 1.05% 1.25%
D 7454 6255 399 399 5.35% 6.38%

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 2870944 19857.46 700 686 144.5
A 9 191 54337 371.18 700 686 144.5
A 7 3 29184 197.16 700 686 144.5
B 3 112 704306 5159.03 701 679 136.4
B 15 201 362799 2655.08 701 679 136.4
B 5 172 48128 347.9 701 679 136.4
C 14 254 370086 2339.09 675 677 157.9
C 12 2 126456 796.43 675 677 157.9
C 12 249 95033 597.46 675 677 157.9
D 1 52 1611944 9632.63 661 640 167.3
D 13 249 560080 3344.42 661 640 167.3
D 5 235 458132 2734.96 661 640 167.3

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