ASTROSAT CZTI

Data Quality Report

Orbit 38246

Creation date: 2024-06-27T21:50:15.259943
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/AS1A07_145T01_9000005370_38246cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38246cztM0_level2_quad_clean.evt
Size (bytes)417,156,48091,163,520
Size397.8 MB 86.9 MB
Events in quadrant A2,668,085619,657
Events in quadrant B2,423,600644,032
Events in quadrant C3,005,472612,029
Events in quadrant D6,952,767530,787

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109183
B0104172
C0119262
D0242202

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5047110.217951%
B5047120.237765%
C5047701.386963%
D504752910.481474%

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 7201 5048 8 8 0.11% 0.16%
B 7201 5048 2 2 0.03% 0.04%
C 7201 5048 69 69 0.96% 1.37%
D 7201 5048 643 643 8.93% 12.74%

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 357807 3039.85 583 572 117.5
A 12 189 20992 173.76 583 572 117.5
A 13 6 10011 80.32 583 572 117.5
B 5 172 88562 792.27 585 571 111.1
B 12 111 13787 119.0 585 571 111.1
B 11 111 12399 106.5 585 571 111.1
C 9 236 460006 3465.02 573 579 132.6
C 15 214 210776 1585.31 573 579 132.6
C 14 254 58538 437.13 573 579 132.6
D 10 203 2663794 19799.34 555 541 134.5
D 12 235 1297090 9638.89 555 541 134.5
D 1 52 640522 4757.79 555 541 134.5

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