ASTROSAT CZTI

Data Quality Report

Orbit 51867

Creation date: 2025-05-01T01:11:26.869662
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_011T05_9000006466_51867cztM0_level2.fits modeM0/AS1C09_011T05_9000006466_51867cztM0_level2_quad_clean.evt
Size (bytes)2,176,453,440226,229,760
Size2.0 GB 215.7 MB
Events in quadrant A14,044,1051,593,886
Events in quadrant B19,799,0081,568,023
Events in quadrant C13,895,1401,544,066
Events in quadrant D31,395,581861,185

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03780
B03780
C03780
D03780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0542723
B0717703
C0542413
D01061083

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A185869415.062951%
B18586314316.910578%
C1858612596.773916%
D18587857446.129015%

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 20050 18587 752 752 3.75% 4.05%
B 20050 18587 2383 2383 11.89% 12.82%
C 20050 18587 1041 1041 5.19% 5.60%
D 20051 18588 8322 8322 41.50% 44.77%

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 1730131 3634.56 1926 1878 475.5
A 4 249 782051 1640.72 1926 1878 475.5
A 4 3 619367 1298.59 1926 1878 475.5
B 4 170 4961439 12787.78 1828 1765 387.8
B 12 32 2971610 7657.3 1828 1765 387.8
B 10 44 1698914 4375.84 1828 1765 387.8
C 14 80 1974872 3866.12 1870 1861 510.3
C 15 147 821534 1606.15 1870 1861 510.3
C 15 230 783179 1530.99 1870 1861 510.3
D 11 129 16396019 39920.72 1462 1407 410.7
D 6 42 4840433 11782.98 1462 1407 410.7
D 7 60 456658 1108.53 1462 1407 410.7

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