ASTROSAT CZTI

Data Quality Report

Orbit 40489

Creation date: 2024-06-27T22:16:44.030730
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/AS1A12_022T01_9000005540_40489cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40489cztM0_level2_quad_clean.evt
Size (bytes)1,921,864,320505,048,320
Size1.8 GB 481.7 MB
Events in quadrant A16,143,9983,549,333
Events in quadrant B16,243,9713,622,920
Events in quadrant C15,002,9663,466,361
Events in quadrant D21,274,2072,459,213

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0675048
B0707197
C0653127
D0860087

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06520
B06520
C06520
D06520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A31901490.153600%
B319013221.009373%
C31901400.125388%
D31901834826.168459%

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 43851 31908 6 6 0.01% 0.02%
B 43851 31908 207 207 0.47% 0.65%
C 43851 31908 19 19 0.04% 0.06%
D 43851 31908 1384 1384 3.16% 4.34%

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 10 83 2444485 3497.43 3478 3410 698.0
A 12 189 94887 131.06 3478 3410 698.0
A 13 248 64786 87.94 3478 3410 698.0
B 4 170 1693080 2617.44 3426 3325 645.6
B 10 246 781372 1205.2 3426 3325 645.6
B 3 112 152263 230.71 3426 3325 645.6
C 15 214 1361510 1771.41 3363 3383 766.7
C 9 187 283900 365.88 3363 3383 766.7
C 14 254 157718 201.3 3363 3383 766.7
D 2 250 4780820 6707.99 2917 2840 712.3
D 12 227 2046222 2868.78 2917 2840 712.3
D 12 191 1485858 2082.07 2917 2840 712.3

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