ASTROSAT CZTI

Data Quality Report

Orbit 50583

Creation date: 2025-02-03T11:51:23.784539
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/AS1T05_239T01_9000006444_50583cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50583cztM0_level2_quad_clean.evt
Size (bytes)654,713,28086,564,160
Size624.4 MB 82.6 MB
Events in quadrant A3,422,652596,006
Events in quadrant B6,175,193591,531
Events in quadrant C8,080,858466,129
Events in quadrant D6,047,446508,941

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148321
B0229661
C0286297
D0225681

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65701922.922374%
B657085312.983257%
C6569162724.767849%
D657068910.487062%

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 7115 6571 49 49 0.69% 0.75%
B 7115 6571 465 465 6.54% 7.08%
C 7114 6570 1414 1414 19.88% 21.52%
D 7115 6571 558 558 7.84% 8.49%

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 3 172169 1026.23 680 664 167.1
A 4 249 83040 492.91 680 664 167.1
A 5 240 77621 460.49 680 664 167.1
B 4 170 1766070 12663.76 651 629 139.4
B 7 0 623825 4470.27 651 629 139.4
B 5 172 448071 3209.56 651 629 139.4
C 15 196 2885900 17520.66 600 597 164.7
C 15 195 1637427 9939.45 600 597 164.7
C 15 147 261176 1582.33 600 597 164.7
D 1 7 1119361 6326.59 637 614 176.8
D 8 246 720477 4070.87 637 614 176.8
D 8 48 572645 3234.87 637 614 176.8

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