ASTROSAT CZTI

Data Quality Report

Orbit 41886

Creation date: 2024-06-27T22:34:24.001727
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_101T04_9000005714_41886cztM0_level2.fits modeM0/AS1A12_101T04_9000005714_41886cztM0_level2_quad_clean.evt
Size (bytes)493,159,68096,448,320
Size470.3 MB 92.0 MB
Events in quadrant A3,420,131683,092
Events in quadrant B3,150,423689,724
Events in quadrant C3,521,588626,178
Events in quadrant D7,677,082485,021

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139833
B0137032
C0144282
D0271052

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6254480.767509%
B62541031.646946%
C62542493.981452%
D6254147423.568916%

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 8909 6256 25 25 0.28% 0.40%
B 8909 6256 16 16 0.18% 0.26%
C 8909 6256 238 238 2.67% 3.80%
D 8909 6256 1351 1351 15.16% 21.60%

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 584337 4098.6 688 675 142.4
A 14 24 158398 1107.57 688 675 142.4
A 2 79 14804 99.22 688 675 142.4
B 4 141 206423 1549.46 679 661 132.8
B 0 190 177589 1332.33 679 661 132.8
B 0 245 66909 498.87 679 661 132.8
C 0 10 717053 4677.94 647 650 153.1
C 15 214 245001 1595.55 647 650 153.1
C 14 254 17878 112.49 647 650 153.1
D 12 79 4342606 29440.81 592 576 147.5
D 13 249 421802 2856.09 592 576 147.5
D 12 6 387325 2622.32 592 576 147.5

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