ASTROSAT CZTI

Data Quality Report

Orbit 23959

Creation date: 2024-06-27T19:00:30.360476
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/AS1A07_101T02_9000003544_23959cztM0_level2.evt modeM0/AS1A07_101T02_9000003544_23959cztM0_level2_quad_clean.evt
Size (bytes)689,137,92091,828,800
Size657.2 MB 87.6 MB
Events in quadrant A3,483,594596,329
Events in quadrant B3,616,534603,335
Events in quadrant C3,601,265584,681
Events in quadrant D9,685,585499,164

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149092
B0152502
C0151112
D0336022

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71291171.641184%
B71301712.398317%
C71292373.324449%
D7129248434.843597%

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 8639 7131 0 0 0.00% 0.00%
B 8640 7132 5 5 0.06% 0.07%
C 8639 7131 10 10 0.12% 0.14%
D 8639 7131 1838 1838 21.28% 25.77%

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 13 254 11283 57.95 901 880 179.5
A 4 2 8156 40.53 901 880 179.5
A 3 137 8057 39.98 901 880 179.5
B 3 64 71592 414.65 896 874 170.5
B 12 111 20340 114.14 896 874 170.5
B 11 111 17969 100.23 896 874 170.5
C 14 238 137726 682.17 865 871 200.6
C 0 10 69497 342.07 865 871 200.6
C 0 239 14695 68.91 865 871 200.6
D 12 218 5588875 31566.23 729 708 177.0
D 8 195 673144 3798.43 729 708 177.0
D 12 250 321355 1811.26 729 708 177.0

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