ASTROSAT CZTI

Data Quality Report

Orbit 20230625_C07_001T11_9000005710_level2

Creation date: 2023-06-27T15:32:01.132926
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/AS1C07_001T11_9000005710cztM0_level2.fits modeM0/AS1C07_001T11_9000005710cztM0_level2_quad_clean.evt
Size (bytes)654,059,5201,032,886,080
Size623.8 MB 985.0 MB
Events in quadrant A3,890,6546,745,770
Events in quadrant B3,773,0346,966,002
Events in quadrant C3,775,6486,620,986
Events in quadrant D3,254,1545,842,980

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015260
B015260
C015260
D015260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02113030
B01592430
C01711020
D02233560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03040
B03040
C03040
D03040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7451836174.853861%
B745194880.654867%
C7451922403.005945%
D7451954707.340410%

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 104989 74508 0 0 0.00% 0.00%
B 104989 74518 0 0 0.00% 0.00%
C 104989 74277 0 0 0.00% 0.00%
D 104989 74450 0 0 0.00% 0.00%

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 9 19 3235 8.94 1015 957 254.9
A 7 110 3116 8.47 1015 957 254.9
A 0 29 3044 8.19 1015 957 254.9
B 2 9 3429 13.09 999 958 188.8
B 3 80 2811 9.81 999 958 188.8
B 2 8 2697 9.21 999 958 188.8
C 1 81 3215 8.96 998 937 254.3
C 1 80 3114 8.56 998 937 254.3
C 1 65 2676 6.84 998 937 254.3
D 4 160 2418 6.23 931 846 252.3
D 7 3 2396 6.14 931 846 252.3
D 10 189 2355 5.98 931 846 252.3

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