ASTROSAT CZTI

Data Quality Report

Orbit 40695

Creation date: 2024-06-27T22:19:16.685010
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_029T02_9000005558_40695cztM0_level2.fits modeM0/AS1A12_029T02_9000005558_40695cztM0_level2_quad_clean.evt
Size (bytes)512,268,48081,152,640
Size488.5 MB 77.4 MB
Events in quadrant A2,819,815586,030
Events in quadrant B4,025,287595,961
Events in quadrant C6,750,505482,786
Events in quadrant D4,952,542418,273

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114053
B0154962
C0237342
D0184992

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A533360.112507%
B53332133.994000%
C5333115621.676355%
D5333129024.189012%

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 7247 5334 4 4 0.06% 0.07%
B 7247 5334 103 103 1.42% 1.93%
C 7247 5333 1090 1090 15.04% 20.44%
D 7247 5334 787 787 10.86% 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 502243 4122.23 593 581 121.7
A 6 10 11239 87.58 593 581 121.7
A 13 254 7331 55.47 593 581 121.7
B 5 172 1113456 9829.77 584 570 113.2
B 0 229 217115 1912.67 584 570 113.2
B 0 190 180249 1587.05 584 570 113.2
C 9 187 4241961 34053.69 534 536 124.6
C 15 214 222088 1778.8 534 536 124.6
C 14 254 178399 1428.03 534 536 124.6
D 12 227 1696657 13450.6 508 495 126.1
D 2 250 845401 6700.12 508 495 126.1
D 12 191 137102 1083.3 508 495 126.1

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