ASTROSAT CZTI

Data Quality Report

Orbit 31210

Creation date: 2024-06-27T20:25:03.378740
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/AS1T04_019T01_9000004516_31210cztM0_level2.evt modeM0/AS1T04_019T01_9000004516_31210cztM0_level2_quad_clean.evt
Size (bytes)626,947,200102,821,760
Size597.9 MB 98.1 MB
Events in quadrant A3,335,757690,863
Events in quadrant B5,358,145685,074
Events in quadrant C3,472,451663,480
Events in quadrant D6,388,992628,561

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137471
B0199041
C0141541
D0235671

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63961101.719825%
B63972584.033141%
C63971973.079569%
D63975218.144443%

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 7481 6397 0 0 0.00% 0.00%
B 7482 6398 13 13 0.17% 0.20%
C 7482 6398 0 0 0.00% 0.00%
D 7482 6398 326 326 4.36% 5.10%

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 10815 57.72 865 851 172.6
A 3 137 8442 43.97 865 851 172.6
A 0 226 7090 36.14 865 851 172.6
B 6 159 1887984 11815.38 844 826 159.7
B 0 190 89442 554.82 844 826 159.7
B 4 80 55043 339.45 844 826 159.7
C 14 238 134328 688.41 834 843 193.9
C 10 22 38587 194.65 834 843 193.9
C 2 114 14883 72.41 834 843 193.9
D 8 195 3119974 16157.02 827 812 193.1
D 11 176 101315 520.6 827 812 193.1
D 12 79 29307 147.6 827 812 193.1

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