ASTROSAT CZTI

Data Quality Report

Orbit 56770

Creation date: 2026-03-26T23:36:07.436601
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/AS1A14_083T05_9000006560_56770cztM0_level2.fits modeM0/AS1A14_083T05_9000006560_56770cztM0_level2_quad_clean.evt
Size (bytes)500,302,08090,158,400
Size477.1 MB 86.0 MB
Events in quadrant A4,599,071586,862
Events in quadrant B6,040,488565,315
Events in quadrant C4,052,733578,767
Events in quadrant D3,327,978551,028

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181374
B0224371
C0166891
D0146361

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64244476.958281%
B6424112817.559153%
C64251512.350195%
D6425711.105058%

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 7404 6425 369 369 4.98% 5.74%
B 7404 6425 934 934 12.61% 14.54%
C 7405 6426 154 154 2.08% 2.40%
D 7405 6426 50 50 0.68% 0.78%

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 3 62 1018510 6091.7 672 653 167.1
A 3 14 561654 3357.5 672 653 167.1
A 10 251 248434 1482.93 672 653 167.1
B 5 172 2097601 16091.76 601 580 130.3
B 4 206 638394 4894.35 601 580 130.3
B 5 185 556762 4267.93 601 580 130.3
C 9 38 520052 2898.57 654 645 179.2
C 12 249 324538 1807.49 654 645 179.2
C 15 230 315078 1754.7 654 645 179.2
D 2 249 219208 1174.49 656 628 186.1
D 11 129 165200 884.29 656 628 186.1
D 2 120 159140 851.73 656 628 186.1

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