ASTROSAT CZTI

Data Quality Report

Orbit 27493

Creation date: 2024-06-27T19:40:37.622262
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/AS1T03_249T01_9000003934_27493cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27493cztM0_level2_quad_clean.evt
Size (bytes)592,655,04088,012,800
Size565.2 MB 83.9 MB
Events in quadrant A3,840,568544,651
Events in quadrant B4,166,721547,736
Events in quadrant C3,843,465520,566
Events in quadrant D5,574,099514,942

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162860
B0171500
C0162290
D0217630

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77282463.183230%
B77293294.256696%
C77293083.984992%
D77285757.440476%

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 8048 7728 7 7 0.09% 0.09%
B 8049 7729 50 50 0.62% 0.65%
C 8049 7729 0 0 0.00% 0.00%
D 8048 7728 318 318 3.95% 4.11%

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 6 16 24362 117.32 988 965 199.4
A 13 254 13191 61.31 988 965 199.4
A 3 137 9674 43.67 988 965 199.4
B 3 64 287665 1512.56 968 940 189.6
B 15 33 29698 151.7 968 940 189.6
B 12 111 23978 121.53 968 940 189.6
C 14 238 147193 654.19 941 944 223.6
C 8 128 11760 48.38 941 944 223.6
C 10 22 6756 26.0 941 944 223.6
D 1 52 1601733 7033.25 944 919 227.6
D 12 227 146070 637.73 944 919 227.6
D 14 35 94376 410.61 944 919 227.6

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