ASTROSAT CZTI

Data Quality Report

Orbit 25059

Creation date: 2024-06-27T19:13:20.721947
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/AS1T03_206T01_9000003672_25059cztM0_level2.evt modeM0/AS1T03_206T01_9000003672_25059cztM0_level2_quad_clean.evt
Size (bytes)526,127,04075,556,800
Size501.8 MB 72.1 MB
Events in quadrant A3,499,944460,428
Events in quadrant B3,629,138467,824
Events in quadrant C3,580,838441,324
Events in quadrant D4,740,736422,406

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148022
B0151052
C0149662
D0186642

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71211692.373262%
B71211972.766465%
C71211912.682208%
D71212503.510743%

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 7726 7122 0 0 0.00% 0.00%
B 7726 7122 0 0 0.00% 0.00%
C 7726 7123 0 0 0.00% 0.00%
D 7726 7122 83 83 1.07% 1.17%

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 12849 65.42 905 885 182.9
A 15 174 8508 41.68 905 885 182.9
A 3 137 8371 40.93 905 885 182.9
B 0 190 47907 268.09 904 881 175.4
B 12 111 21901 119.83 904 881 175.4
B 11 111 19229 104.6 904 881 175.4
C 14 238 135627 659.32 864 869 204.4
C 3 233 63644 307.14 864 869 204.4
C 7 247 16084 74.44 864 869 204.4
D 1 52 516805 2437.51 867 842 211.7
D 7 238 486854 2296.02 867 842 211.7
D 8 195 263822 1242.37 867 842 211.7

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