ASTROSAT CZTI

Data Quality Report

Orbit 54666

Creation date: 2025-11-10T12:46:28.298513
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_066T07_9000006522_54666cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54666cztM0_level2_quad_clean.evt
Size (bytes)831,862,080114,471,360
Size793.3 MB 109.2 MB
Events in quadrant A4,937,950831,789
Events in quadrant B5,578,672839,910
Events in quadrant C6,584,560685,552
Events in quadrant D13,004,704493,739

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0213500
B0233360
C0259710
D0448150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01780
B01780
C01780
D01780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A88552693.037832%
B88556307.114625%
C8856121313.696929%
D8856334737.793586%

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 8855 8855 183 183 2.07% 2.07%
B 8855 8855 206 206 2.33% 2.33%
C 8856 8856 832 832 9.39% 9.39%
D 8856 8856 2934 2934 33.13% 33.13%

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 7 14 577153 2378.58 976 953 242.2
A 11 3 328978 1354.1 976 953 242.2
A 0 8 176084 722.95 976 953 242.2
B 2 249 1099930 5414.54 943 910 203.0
B 5 172 323847 1591.01 943 910 203.0
B 0 213 222069 1089.58 943 910 203.0
C 3 242 1167393 4766.97 890 882 244.7
C 4 5 1122897 4585.14 890 882 244.7
C 6 223 238570 971.32 890 882 244.7
D 11 129 8649026 41200.51 737 704 209.9
D 11 176 1221366 5815.22 737 704 209.9
D 5 173 61823 291.17 737 704 209.9

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