ASTROSAT CZTI

Data Quality Report

Orbit 54511

Creation date: 2025-10-26T00:53:52.286173
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_127T09_9000006520_54511cztM0_level2.fits modeM0/AS1A14_127T09_9000006520_54511cztM0_level2_quad_clean.evt
Size (bytes)1,096,914,240232,424,640
Size1.0 GB 221.7 MB
Events in quadrant A8,276,4211,539,960
Events in quadrant B8,712,2471,606,058
Events in quadrant C11,467,9661,400,935
Events in quadrant D10,854,8721,339,468

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0363573
B0379033
C0461683
D0442673

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03380
B03380
C03380
D03380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A166872991.791814%
B166875663.391862%
C166889585.740652%
D166888054.823826%

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 18543 16690 92 92 0.50% 0.55%
B 18543 16690 255 255 1.38% 1.53%
C 18544 16691 684 684 3.69% 4.10%
D 18544 16691 631 631 3.40% 3.78%

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 8 245 313900 701.81 1816 1771 444.7
A 3 14 271707 606.94 1816 1771 444.7
A 7 237 253903 566.91 1816 1771 444.7
B 5 172 698567 1817.61 1776 1705 383.4
B 5 185 293070 759.96 1776 1705 383.4
B 0 213 213251 551.77 1776 1705 383.4
C 4 5 1798985 3785.99 1741 1727 474.7
C 13 3 1109446 2333.45 1741 1727 474.7
C 12 249 475867 998.79 1741 1727 474.7
D 2 172 1857616 3764.64 1748 1672 493.0
D 10 181 458559 926.76 1748 1672 493.0
D 3 12 437705 884.46 1748 1672 493.0

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