ASTROSAT CZTI

Data Quality Report

Orbit 40146

Creation date: 2024-06-27T22:12:54.367191
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/AS1A12_042T01_9000005522_40146cztM0_level2.fits modeM0/AS1A12_042T01_9000005522_40146cztM0_level2_quad_clean.evt
Size (bytes)672,148,80071,729,280
Size641.0 MB 68.4 MB
Events in quadrant A2,918,937609,038
Events in quadrant B2,380,889626,481
Events in quadrant C13,747,23659,802
Events in quadrant D5,397,648484,301

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120702
B0112401
C0445861
D0199121

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A560660.107028%
B560650.089190%
C5606512091.330717%
D560681614.555833%

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 7069 5607 2 2 0.03% 0.04%
B 7069 5607 0 0 0.00% 0.00%
C 7068 5605 5085 5085 71.94% 90.72%
D 7069 5607 827 827 11.70% 14.75%

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 419048 3422.29 595 583 122.3
A 12 189 176974 1442.56 595 583 122.3
A 2 79 13915 109.03 595 583 122.3
B 0 190 20339 174.12 591 573 113.5
B 0 230 18930 161.71 591 573 113.5
B 12 111 14456 122.3 591 573 113.5
C 9 187 12787978 250338.38 216 217 51.1
C 15 214 95508 1865.46 216 217 51.1
C 9 203 5793 109.16 216 217 51.1
D 12 0 2279909 17225.61 541 525 132.3
D 13 249 463992 3502.48 541 525 132.3
D 12 227 200046 1507.81 541 525 132.3

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