ASTROSAT CZTI

Data Quality Report

Orbit 50187

Creation date: 2025-01-10T17:28:48.115999
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/AS1C09_003T01_9000006442_50187cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50187cztM0_level2_quad_clean.evt
Size (bytes)1,072,730,88056,027,520
Size1023.0 MB 53.4 MB
Events in quadrant A8,866,428454,061
Events in quadrant B4,444,127574,295
Events in quadrant C13,228,15688,419
Events in quadrant D12,730,103179,207

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0303421
B0171201
C0431741
D0417901

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5722145125.358266%
B57224648.109053%
C5723493786.265944%
D5723399169.736152%

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 6842 5723 1394 1394 20.37% 24.36%
B 6842 5723 278 278 4.06% 4.86%
C 6843 5724 4270 4270 62.40% 74.60%
D 6843 5724 3815 3815 55.75% 66.65%

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 4 4 3699134 26300.64 559 547 140.6
A 0 98 725791 5157.21 559 547 140.6
A 6 250 662538 4707.42 559 547 140.6
B 4 206 1273538 10045.74 589 569 126.7
B 3 249 215577 1696.75 589 569 126.7
B 5 172 174143 1369.77 589 569 126.7
C 4 111 5154546 65447.78 277 275 78.8
C 15 213 4397140 55830.41 277 275 78.8
C 15 230 686158 8709.19 277 275 78.8
D 15 185 3072221 25856.07 414 400 118.8
D 8 192 1861339 15663.86 414 400 118.8
D 15 168 1582654 13318.12 414 400 118.8

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