ASTROSAT CZTI

Data Quality Report

Orbit 41976

Creation date: 2024-06-27T22:35:14.919382
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_104T01_9000005728_41976cztM0_level2.fits modeM0/AS1A12_104T01_9000005728_41976cztM0_level2_quad_clean.evt
Size (bytes)301,956,48091,656,000
Size288.0 MB 87.4 MB
Events in quadrant A2,874,459608,074
Events in quadrant B2,546,029619,659
Events in quadrant C2,547,312600,585
Events in quadrant D2,770,839553,521

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121433
B0116082
C0112972
D0123782

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5625120.213333%
B5625120.213333%
C562520.035556%
D5625530.942222%

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 7178 5626 3 3 0.04% 0.05%
B 7178 5626 3 3 0.04% 0.05%
C 7178 5626 0 0 0.00% 0.00%
D 7178 5626 50 50 0.70% 0.89%

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 549824 4434.81 595 581 123.8
A 15 223 20267 158.95 595 581 123.8
A 13 6 7373 54.84 595 581 123.8
B 5 255 72110 619.81 593 577 115.4
B 0 156 62006 532.26 593 577 115.4
B 0 190 54014 463.01 593 577 115.4
C 15 214 250464 1808.57 588 591 138.2
C 8 79 5840 37.99 588 591 138.2
C 13 61 3811 23.31 588 591 138.2
D 12 6 224312 1572.79 583 568 142.3
D 1 52 57225 398.26 583 568 142.3
D 13 249 47542 330.2 583 568 142.3

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