ASTROSAT CZTI

Data Quality Report

Orbit 39711

Creation date: 2024-06-27T22:08:05.599099
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_022T01_9000005494_39711cztM0_level2.fits modeM0/AS1A12_022T01_9000005494_39711cztM0_level2_quad_clean.evt
Size (bytes)443,583,36090,152,640
Size423.0 MB 86.0 MB
Events in quadrant A3,347,688600,513
Events in quadrant B2,830,660631,262
Events in quadrant C5,689,277571,074
Events in quadrant D4,124,936542,209

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134703
B0122212
C0208592
D0160902

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A55032574.670180%
B55031001.817191%
C55034999.067781%
D55033336.051245%

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 7087 5504 201 201 2.84% 3.65%
B 7086 5503 64 64 0.90% 1.16%
C 7087 5504 489 489 6.90% 8.88%
D 7087 5504 240 240 3.39% 4.36%

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 13 248 622718 5195.62 587 574 119.7
A 10 83 409904 3418.38 587 574 119.7
A 15 174 22115 179.89 587 574 119.7
B 5 172 270613 2357.16 596 579 114.6
B 5 255 119033 1034.0 596 579 114.6
B 0 190 61541 532.14 596 579 114.6
C 9 187 1758950 13315.24 566 569 132.1
C 15 208 1476477 11176.23 566 569 132.1
C 15 214 217076 1639.49 566 569 132.1
D 12 227 919032 6458.28 573 556 142.2
D 2 250 775231 5447.14 573 556 142.2
D 13 249 68106 474.98 573 556 142.2

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