ASTROSAT CZTI

Data Quality Report

Orbit 20210611_A10_071T40_9000004458_level2

Creation date: 2021-06-14T11:23:09.325215
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/AS1A10_071T40_9000004458cztM0_level2_bc.evt modeM0/AS1A10_071T40_9000004458cztM0_level2_quad_clean.evt
Size (bytes)4,474,431,360917,760,960
Size4.2 GB 875.2 MB
Events in quadrant A16,029,0726,007,145
Events in quadrant B71,492,8265,427,572
Events in quadrant C17,692,2355,665,194
Events in quadrant D25,249,8385,604,075

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01554550
B03498120
C01641790
D01829980

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015120
B015120
C015120
D015120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01110
B01110
C01110
D01110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7423014641.972248%
B742302068027.859356%
C7423025533.439310%
D7423017662.379092%

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 85375 74226 13 13 0.02% 0.02%
B 85375 74222 1546 1546 1.81% 2.08%
C 85375 74222 26 26 0.03% 0.04%
D 85375 74224 101 101 0.12% 0.14%

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 13 254 130324 143.74 4112 4039 878.5
A 0 31 125629 138.4 4112 4039 878.5
A 15 192 26353 25.4 4112 4039 878.5
B 6 36 36701457 51032.78 3801 3718 719.1
B 6 159 18756075 26077.49 3801 3718 719.1
B 5 172 451474 622.66 3801 3718 719.1
C 3 233 1216563 1324.36 3885 3870 915.7
C 0 10 745176 809.57 3885 3870 915.7
C 2 16 437036 473.05 3885 3870 915.7
D 8 195 7108015 7830.32 3941 3826 907.3
D 1 52 1283072 1410.0 3941 3826 907.3
D 2 250 434515 474.71 3941 3826 907.3

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