ASTROSAT CZTI

Data Quality Report

Orbit 39940

Creation date: 2024-06-27T22:10:22.433352
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_044T21_9000005512_39940cztM0_level2.fits modeM0/AS1A12_044T21_9000005512_39940cztM0_level2_quad_clean.evt
Size (bytes)353,764,80079,920,000
Size337.4 MB 76.2 MB
Events in quadrant A2,628,258566,493
Events in quadrant B2,360,571573,189
Events in quadrant C3,850,510502,908
Events in quadrant D3,898,505454,847

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0982
B0994
C0994
D0964

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010836458
B010370511
C0157001124
D0159091365

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A465990.193175%
B4625210.454054%
C45312605.738248%
D45304189.227373%

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 7069 4776 6 6 0.08% 0.13%
B 7069 4757 14 14 0.20% 0.29%
C 7068 4715 185 185 2.62% 3.92%
D 7069 4686 438 438 6.20% 9.35%

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 443195 3931.05 552 541 112.6
A 14 250 15950 136.84 552 541 112.6
A 13 248 14447 123.49 552 541 112.6
B 0 183 79705 758.19 539 526 104.4
B 5 255 50849 481.88 539 526 104.4
B 0 230 44942 425.31 539 526 104.4
C 9 54 1655607 14101.86 503 506 117.4
C 15 214 190632 1619.92 503 506 117.4
C 0 10 14019 115.13 503 506 117.4
D 12 227 1077771 8590.2 504 489 125.4
D 12 233 329419 2622.87 504 489 125.4
D 2 250 252538 2009.83 504 489 125.4

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