ASTROSAT CZTI

Data Quality Report

Orbit 42084

Creation date: 2024-06-27T22:36:38.948777
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_044T22_9000005740_42084cztM0_level2.fits modeM0/AS1A12_044T22_9000005740_42084cztM0_level2_quad_clean.evt
Size (bytes)336,320,64081,650,880
Size320.7 MB 77.9 MB
Events in quadrant A5,114,598503,693
Events in quadrant B2,167,410578,702
Events in quadrant C2,360,861554,051
Events in quadrant D2,434,926501,192

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0185482
B096982
C097442
D0106542

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A477053011.111111%
B4770100.209644%
C477030.062893%
D4770751.572327%

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 6923 4771 545 545 7.87% 11.42%
B 6923 4771 2 2 0.03% 0.04%
C 6923 4771 0 0 0.00% 0.00%
D 6923 4771 66 66 0.95% 1.38%

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 15 222 2622530 24674.22 519 509 106.3
A 10 83 470449 4422.31 519 509 106.3
A 13 6 8421 74.45 519 509 106.3
B 5 255 65175 626.43 535 520 103.2
B 12 111 12663 117.65 535 520 103.2
B 11 111 11922 110.47 535 520 103.2
C 15 214 200083 1604.33 533 537 124.4
C 9 54 61499 490.13 533 537 124.4
C 8 79 20855 163.35 533 537 124.4
D 12 6 262523 2035.41 525 511 128.7
D 10 199 57731 444.51 525 511 128.7
D 13 249 54144 416.64 525 511 128.7

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