ASTROSAT CZTI

Data Quality Report

Orbit 41418

Creation date: 2024-06-27T22:28:46.635531
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_035T01_9000005666_41418cztM0_level2.fits modeM0/AS1A12_035T01_9000005666_41418cztM0_level2_quad_clean.evt
Size (bytes)311,889,60084,329,280
Size297.4 MB 80.4 MB
Events in quadrant A2,663,570573,682
Events in quadrant B2,253,839592,929
Events in quadrant C3,042,921537,245
Events in quadrant D3,202,485505,460

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108723
B0100252
C0119322
D0129052

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4903120.244748%
B490370.142770%
C49032795.690394%
D49032224.527840%

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 7025 4904 3 3 0.04% 0.06%
B 7025 4904 0 0 0.00% 0.00%
C 7025 4904 269 269 3.83% 5.49%
D 7025 4904 163 163 2.32% 3.32%

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 480647 4222.14 553 541 113.7
A 13 248 17380 148.09 553 541 113.7
A 2 79 16698 142.09 553 541 113.7
B 0 190 57698 543.05 550 535 105.3
B 12 111 13347 121.71 550 535 105.3
B 11 111 12444 113.14 550 535 105.3
C 0 10 686972 5562.51 530 535 123.4
C 15 214 212135 1714.69 530 535 123.4
C 0 15 65988 530.39 530 535 123.4
D 2 249 759676 5784.36 541 527 131.2
D 5 222 119888 909.48 541 527 131.2
D 1 52 109413 829.66 541 527 131.2

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