ASTROSAT CZTI

Data Quality Report

Orbit 51407

Creation date: 2025-03-31T00:06:15.992003
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/AS1C07_001T03_9000006456_51407cztM0_level2.fits modeM0/AS1C07_001T03_9000006456_51407cztM0_level2_quad_clean.evt
Size (bytes)629,789,76094,230,720
Size600.6 MB 89.9 MB
Events in quadrant A5,465,790615,344
Events in quadrant B4,304,030700,304
Events in quadrant C7,307,138540,112
Events in quadrant D5,733,155544,518

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0207822
B0171432
C0261416
D0215862

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64914977.656756%
B64912163.327684%
C6490127219.599384%
D649066710.277350%

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 7651 6492 333 333 4.35% 5.13%
B 7651 6492 55 55 0.72% 0.85%
C 7650 6491 927 927 12.12% 14.28%
D 7650 6491 591 591 7.73% 9.10%

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 4 175 557114 3212.74 701 684 173.2
A 8 249 541539 3122.81 701 684 173.2
A 15 174 479623 2765.32 701 684 173.2
B 10 254 754682 5080.14 709 684 148.4
B 5 172 131823 883.56 709 684 148.4
B 5 185 102641 686.95 709 684 148.4
C 15 179 2100753 11695.78 657 651 179.6
C 4 12 1097147 6106.55 657 651 179.6
C 10 171 438369 2437.72 657 651 179.6
D 3 12 1393214 7380.48 677 652 188.7
D 8 176 841442 4456.13 677 652 188.7
D 2 216 287317 1519.31 677 652 188.7

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