ASTROSAT CZTI

Data Quality Report

Orbit 39083

Creation date: 2024-06-27T22:00:12.112215
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_067T01_9000005432_39083cztM0_level2.fits modeM0/AS1T05_067T01_9000005432_39083cztM0_level2_quad_clean.evt
Size (bytes)415,391,040102,193,920
Size396.1 MB 97.5 MB
Events in quadrant A3,124,296705,357
Events in quadrant B2,816,941726,743
Events in quadrant C4,004,426661,089
Events in quadrant D5,006,458619,461

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126722
B0117351
C0155801
D0187861

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5465190.347667%
B5465250.457457%
C54651622.964318%
D54651492.726441%

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 9231 5467 3 3 0.03% 0.05%
B 9231 5467 6 6 0.06% 0.11%
C 9231 5467 124 124 1.34% 2.27%
D 9231 5467 166 166 1.80% 3.04%

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 411309 3081.5 668 658 133.3
A 7 3 73771 548.63 668 658 133.3
A 13 248 18808 136.2 668 658 133.3
B 5 184 68191 535.35 661 645 126.2
B 5 172 56102 439.54 661 645 126.2
B 0 230 52023 407.21 661 645 126.2
C 15 208 1276868 8681.14 631 636 147.0
C 15 214 228171 1547.73 631 636 147.0
C 0 10 15490 101.04 631 636 147.0
D 12 235 1774705 11572.83 636 620 153.3
D 12 233 232735 1514.15 636 620 153.3
D 12 227 200385 1303.12 636 620 153.3

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