ASTROSAT CZTI

Data Quality Report

Orbit 19325

Creation date: 2024-06-27T18:01:25.133041
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/AS1A05_204T01_9000002856_19325cztM0_level2.evt modeM0/AS1A05_204T01_9000002856_19325cztM0_level2_quad_clean.evt
Size (bytes)523,434,24091,454,400
Size499.2 MB 87.2 MB
Events in quadrant A3,136,595629,598
Events in quadrant B3,314,252630,102
Events in quadrant C3,228,670606,083
Events in quadrant D5,746,065464,868

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133242
B0139082
C0134852
D0213282

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6281330.525394%
B6281420.668683%
C6281741.178156%
D6281125720.012737%

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 7511 6282 2 2 0.03% 0.03%
B 7511 6282 2 2 0.03% 0.03%
C 7511 6281 0 0 0.00% 0.00%
D 7511 6282 1051 1051 13.99% 16.73%

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 4 2 15356 90.11 806 788 161.7
A 5 16 10571 60.51 806 788 161.7
A 11 29 9317 52.76 806 788 161.7
B 6 36 80380 534.67 797 778 148.9
B 0 190 30265 198.06 797 778 148.9
B 0 229 23522 152.77 797 778 148.9
C 14 238 121259 666.1 776 783 180.9
C 3 233 73824 403.84 776 783 180.9
C 13 61 5334 25.16 776 783 180.9
D 7 238 2678167 16458.27 675 658 162.7
D 11 176 265975 1630.87 675 658 162.7
D 1 52 124123 758.92 675 658 162.7

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