ASTROSAT CZTI

Data Quality Report

Orbit 16988

Creation date: 2024-06-27T17:30:19.812993
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/AS1A05_143T01_9000002524_16988cztM0_level2.evt modeM0/AS1A05_143T01_9000002524_16988cztM0_level2_quad_clean.evt
Size (bytes)608,359,68095,967,360
Size580.2 MB 91.5 MB
Events in quadrant A3,353,064625,677
Events in quadrant B4,651,256627,149
Events in quadrant C4,086,693606,348
Events in quadrant D5,875,343575,370

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144532
B0183572
C0166702
D0221172

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67751131.667897%
B67763395.002952%
C67761191.756198%
D67766439.489374%

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 8736 6778 29 29 0.33% 0.43%
B 8737 6779 211 211 2.42% 3.11%
C 8737 6779 2 2 0.02% 0.03%
D 8737 6779 480 480 5.49% 7.08%

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 15 174 174489 1036.6 826 806 167.6
A 0 226 7269 38.57 826 806 167.6
A 12 194 6074 31.44 826 806 167.6
B 3 64 1102293 6902.94 828 807 159.6
B 0 189 112773 701.68 828 807 159.6
B 15 35 66606 412.36 828 807 159.6
C 3 233 825999 4409.38 799 805 187.1
C 14 238 122712 651.4 799 805 187.1
C 8 128 10041 49.35 799 805 187.1
D 1 52 2860565 15203.43 774 751 188.1
D 15 145 28863 149.45 774 751 188.1
D 2 234 26965 139.36 774 751 188.1

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