ASTROSAT CZTI

Data Quality Report

Orbit 55378

Creation date: 2025-12-23T10:52:26.614963
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_009T01_9000006534_55378cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55378cztM0_level2_quad_clean.evt
Size (bytes)684,483,840122,820,480
Size652.8 MB 117.1 MB
Events in quadrant A9,231,744721,457
Events in quadrant B4,588,226882,885
Events in quadrant C4,620,225792,231
Events in quadrant D6,209,334706,522

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01780
B01780
C01780
D01780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0336831
B0202061
C0205691
D0247271

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8868141815.990077%
B88682142.413171%
C88692312.604578%
D88697258.174541%

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 8903 8868 1048 1048 11.77% 11.82%
B 8903 8869 121 121 1.36% 1.36%
C 8904 8870 175 175 1.97% 1.97%
D 8904 8869 556 556 6.24% 6.27%

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 4 159 5383917 23964.56 908 887 224.6
A 11 31 164930 730.3 908 887 224.6
A 3 78 59073 259.03 908 887 224.6
B 5 185 391423 1910.43 947 910 204.4
B 0 199 224045 1091.6 947 910 204.4
B 5 248 76687 370.71 947 910 204.4
C 13 3 639911 2490.48 936 925 256.6
C 12 249 84194 324.54 936 925 256.6
C 12 250 65172 250.41 936 925 256.6
D 11 129 556157 2223.03 886 848 249.8
D 2 249 489430 1955.91 886 848 249.8
D 15 107 463812 1853.35 886 848 249.8

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