ASTROSAT CZTI

Data Quality Report

Orbit 12968

Creation date: 2024-06-27T16:34:33.836511
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/AS1A04_112T01_9000001908_12968cztM0_level2.evt modeM0/AS1A04_112T01_9000001908_12968cztM0_level2_quad_clean.evt
Size (bytes)544,832,64094,803,840
Size519.6 MB 90.4 MB
Events in quadrant A3,886,132602,718
Events in quadrant B4,319,773584,577
Events in quadrant C3,526,216617,080
Events in quadrant D4,299,027584,722

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157903
B0171662
C0149042
D0171402

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69231402.022245%
B69234826.962300%
C69231231.776686%
D69231782.571140%

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 9475 6927 0 0 0.00% 0.00%
B 9475 6927 155 155 1.64% 2.24%
C 9475 6927 0 0 0.00% 0.00%
D 9475 6927 47 47 0.50% 0.68%

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 12 189 109520 604.06 917 902 179.8
A 1 162 93491 514.92 917 902 179.8
A 1 178 40697 221.31 917 902 179.8
B 4 239 651964 4042.85 886 866 161.0
B 3 64 89883 552.73 886 866 161.0
B 0 85 38603 234.32 886 866 161.0
C 13 61 6780 28.92 903 910 203.0
C 8 222 2451 7.59 903 910 203.0
C 3 248 2188 6.3 903 910 203.0
D 1 52 685045 3300.09 893 871 207.3
D 8 195 191087 917.5 893 871 207.3
D 2 234 28036 131.03 893 871 207.3

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