ASTROSAT CZTI

Data Quality Report

Orbit 39552

Creation date: 2024-06-27T22:06:02.765582
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_018T01_9000005488_39552cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39552cztM0_level2_quad_clean.evt
Size (bytes)372,510,72091,987,200
Size355.3 MB 87.7 MB
Events in quadrant A3,000,363615,036
Events in quadrant B2,381,772635,717
Events in quadrant C4,369,441589,378
Events in quadrant D3,594,385546,906

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125182
B0113971
C0170101
D0151561

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5694120.210748%
B569460.105374%
C56942354.127151%
D56942213.881279%

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 7186 5695 6 6 0.08% 0.11%
B 7186 5695 0 0 0.00% 0.00%
C 7186 5695 239 239 3.33% 4.20%
D 7186 5695 200 200 2.78% 3.51%

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 448363 3704.1 594 582 120.9
A 15 222 226475 1868.61 594 582 120.9
A 6 10 8136 62.49 594 582 120.9
B 0 230 21220 180.43 592 575 114.4
B 5 255 15619 131.48 592 575 114.4
B 12 111 14699 123.44 592 575 114.4
C 9 187 1822270 13672.86 574 576 133.2
C 15 214 237735 1780.01 574 576 133.2
C 15 208 61508 457.33 574 576 133.2
D 14 34 516080 3708.69 569 552 139.0
D 12 227 395612 2842.04 569 552 139.0
D 13 249 167526 1201.2 569 552 139.0

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