ASTROSAT CZTI

Data Quality Report

Orbit 22251

Creation date: 2024-06-27T18:38:33.874564
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_018T02_9000003292_22251cztM0_level2.evt modeM0/AS1A07_018T02_9000003292_22251cztM0_level2_quad_clean.evt
Size (bytes)574,583,04099,858,240
Size548.0 MB 95.2 MB
Events in quadrant A3,613,823650,110
Events in quadrant B3,722,896662,151
Events in quadrant C3,671,186629,611
Events in quadrant D5,889,089564,960

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154652
B0156892
C0156162
D0224222

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74381872.514117%
B74382243.011562%
C74382002.688895%
D743880910.876580%

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 7753 7440 0 0 0.00% 0.00%
B 7753 7440 1 1 0.01% 0.01%
C 7753 7440 3 3 0.04% 0.04%
D 7753 7440 623 623 8.04% 8.37%

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 11368 54.84 937 917 190.6
A 3 137 8281 38.64 937 917 190.6
A 0 226 8144 37.92 937 917 190.6
B 0 190 33597 181.07 927 901 180.6
B 4 173 30451 163.65 927 901 180.6
B 12 111 22401 119.07 927 901 180.6
C 14 238 140646 663.93 889 893 210.5
C 10 22 65142 305.23 889 893 210.5
C 13 61 6215 25.28 889 893 210.5
D 1 52 2485572 11829.89 866 842 210.0
D 7 222 36302 168.83 866 842 210.0
D 7 223 34807 161.71 866 842 210.0

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