ASTROSAT CZTI

Data Quality Report

Orbit 38711

Creation date: 2024-06-27T21:55:26.201225
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_054T01_9000005392_38711cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38711cztM0_level2_quad_clean.evt
Size (bytes)516,744,00080,622,720
Size492.8 MB 76.9 MB
Events in quadrant A2,916,860595,355
Events in quadrant B2,511,224611,288
Events in quadrant C2,622,288578,109
Events in quadrant D10,672,613291,065

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117443
B0108492
C0108432
D0352872

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5211260.498945%
B5211140.268662%
C5211100.191902%
D5211286955.056611%

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 7065 5212 19 19 0.27% 0.36%
B 7065 5212 4 4 0.06% 0.08%
C 7065 5212 4 4 0.06% 0.08%
D 7065 5212 3046 3046 43.11% 58.44%

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 400721 3282.35 594 582 121.9
A 0 8 206100 1685.87 594 582 121.9
A 13 254 8351 63.73 594 582 121.9
B 4 171 97740 853.73 588 572 113.8
B 15 85 48345 419.74 588 572 113.8
B 0 230 14520 122.55 588 572 113.8
C 15 214 216971 1598.12 577 579 135.4
C 3 110 55057 402.34 577 579 135.4
C 15 208 50235 366.72 577 579 135.4
D 2 16 7524543 61664.12 495 479 122.0
D 12 235 357697 2927.61 495 479 122.0
D 5 222 271310 2219.61 495 479 122.0

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