ASTROSAT CZTI

Data Quality Report

Orbit 10236

Creation date: 2024-06-27T15:56:42.620742
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/AS1A03_099T01_9000001472_10236cztM0_level2.evt modeM0/AS1A03_099T01_9000001472_10236cztM0_level2_quad_clean.evt
Size (bytes)135,241,92036,475,200
Size129.0 MB 34.8 MB
Events in quadrant A971,487244,674
Events in quadrant B1,004,464246,779
Events in quadrant C869,702244,108
Events in quadrant D1,119,965231,674

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040551
B042111
C038641
D044411

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1875150.800000%
B1875191.013333%
C187560.320000%
D1875321.706667%

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 1875 1875 3 3 0.16% 0.16%
B 1875 1875 4 4 0.21% 0.21%
C 1875 1875 0 0 0.00% 0.00%
D 1875 1875 21 21 1.12% 1.12%

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 15 239 26625 531.61 235 231 49.6
A 8 15 24525 489.31 235 231 49.6
A 15 223 11075 218.41 235 231 49.6
B 4 239 39749 848.15 230 225 46.6
B 0 214 32939 702.01 230 225 46.6
B 10 247 9263 193.95 230 225 46.6
C 13 61 1658 26.69 222 224 53.7
C 0 207 722 9.27 222 224 53.7
C 14 67 592 6.85 222 224 53.7
D 1 52 133043 2386.9 224 218 55.6
D 2 16 54108 968.42 224 218 55.6
D 8 195 44938 803.63 224 218 55.6

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