ASTROSAT CZTI

Data Quality Report

Orbit 51231

Creation date: 2025-03-19T02:01:51.916415
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_001T01_9000006454_51231cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51231cztM0_level2_quad_clean.evt
Size (bytes)585,426,24084,934,080
Size558.3 MB 81.0 MB
Events in quadrant A4,612,013579,910
Events in quadrant B4,434,134630,514
Events in quadrant C8,400,357386,177
Events in quadrant D3,738,582539,029

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179771
B0174461
C0292271
D0156291

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62512243.583427%
B62512904.639258%
C6252232037.108125%
D62521462.335253%

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 7296 6252 138 138 1.89% 2.21%
B 7296 6252 192 192 2.63% 3.07%
C 7297 6253 1788 1788 24.50% 28.59%
D 7297 6253 104 104 1.43% 1.66%

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 12 3 702378 4368.69 647 631 160.6
A 9 160 280558 1742.67 647 631 160.6
A 8 249 248310 1541.91 647 631 160.6
B 5 185 743079 5286.13 651 628 140.5
B 8 128 529363 3764.51 651 628 140.5
B 10 254 97349 688.64 651 628 140.5
C 4 12 5327848 39476.04 484 479 135.0
C 9 95 247963 1833.86 484 479 135.0
C 12 247 185215 1368.9 484 479 135.0
D 3 12 297542 1659.27 636 614 179.0
D 8 176 159987 890.6 636 614 179.0
D 10 181 154951 862.45 636 614 179.0

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