ASTROSAT CZTI

Data Quality Report

Orbit 52889

Creation date: 2025-07-16T12:41:05.459487
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_011T08_9000006482_52889cztM0_level2.fits modeM0/AS1C09_011T08_9000006482_52889cztM0_level2_quad_clean.evt
Size (bytes)750,778,56084,453,120
Size716.0 MB 80.5 MB
Events in quadrant A11,380,119387,895
Events in quadrant B7,107,002568,646
Events in quadrant C4,044,595592,250
Events in quadrant D4,768,471565,186

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0381951
B0254191
C0164821
D0184561

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6349294246.338006%
B6349137121.593952%
C63491852.913845%
D63492964.662152%

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 7559 6349 2715 2715 35.92% 42.76%
B 7558 6348 1084 1084 14.34% 17.08%
C 7559 6350 153 153 2.02% 2.41%
D 7559 6350 283 283 3.74% 4.46%

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 9 191 7464554 50960.19 589 577 146.5
A 12 17 840346 5733.51 589 577 146.5
A 8 43 193699 1318.54 589 577 146.5
B 8 3 2511576 18822.38 632 613 133.4
B 10 44 1466514 10988.51 632 613 133.4
B 4 81 207191 1548.52 632 613 133.4
C 7 80 463329 2576.58 651 643 179.6
C 2 12 294510 1636.47 651 643 179.6
C 12 252 213915 1187.66 651 643 179.6
D 8 176 780183 4104.92 657 627 189.9
D 2 249 426120 2240.52 657 627 189.9
D 10 172 317563 1668.89 657 627 189.9

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