ASTROSAT CZTI

Data Quality Report

Orbit 39342

Creation date: 2024-06-27T22:03:26.957540
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_018T01_9000005470_39342cztM0_level2.fits modeM0/AS1A12_018T01_9000005470_39342cztM0_level2_quad_clean.evt
Size (bytes)409,155,84091,486,080
Size390.2 MB 87.2 MB
Events in quadrant A2,821,272621,950
Events in quadrant B2,507,995638,890
Events in quadrant C2,773,548612,284
Events in quadrant D6,613,081510,386

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119493
B0114002
C0119662
D0235422

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5526160.289540%
B5526180.325733%
C5526140.253348%
D552679314.350344%

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 7259 5527 9 9 0.12% 0.16%
B 7259 5527 6 6 0.08% 0.11%
C 7259 5527 5 5 0.07% 0.09%
D 7259 5527 676 676 9.31% 12.23%

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 435540 3527.62 605 592 123.3
A 13 248 30056 238.97 605 592 123.3
A 13 254 7938 59.58 605 592 123.3
B 5 172 66666 564.51 603 586 117.1
B 5 184 52839 446.39 603 586 117.1
B 12 111 14738 120.9 603 586 117.1
C 15 214 250424 1798.27 593 597 138.9
C 9 187 157576 1129.95 593 597 138.9
C 3 233 38981 276.29 593 597 138.9
D 12 235 3573584 26072.53 560 544 137.0
D 2 249 326038 2375.13 560 544 137.0
D 13 249 252101 1835.61 560 544 137.0

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