ASTROSAT CZTI

Data Quality Report

Orbit 10315

Creation date: 2024-06-27T15:57:48.433120
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_124T01_9000001486_10315cztM0_level2.evt modeM0/AS1A03_124T01_9000001486_10315cztM0_level2_quad_clean.evt
Size (bytes)1,526,135,040275,630,400
Size1.4 GB 262.9 MB
Events in quadrant A10,861,4641,719,599
Events in quadrant B11,927,4201,687,049
Events in quadrant C9,735,9401,712,880
Events in quadrant D12,177,7221,685,653

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06166014570
B07124320809
C06062615451
D06744215409

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04312
B04817
C04817
D04615

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0608141
B0608141
C0608140
D0598132

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A22292900.403732%
B218894251.941615%
C22324370.165741%
D230921970.853109%

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 26564 23273 17 17 0.06% 0.07%
B 26564 22930 268 268 1.01% 1.17%
C 26564 23254 2 2 0.01% 0.01%
D 26564 23336 117 117 0.44% 0.50%

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 8 15 563670 1093.94 2545 2486 513.0
A 8 5 386841 749.24 2545 2486 513.0
A 13 251 53560 99.56 2545 2486 513.0
B 4 239 1845515 3875.45 2496 2435 475.6
B 11 51 150927 312.23 2496 2435 475.6
B 0 214 123102 253.73 2496 2435 475.6
C 14 234 34496 55.81 2482 2493 573.4
C 4 254 21102 32.45 2482 2493 573.4
C 13 61 18526 27.96 2482 2493 573.4
D 1 52 1029307 1680.35 2544 2472 611.1
D 8 195 681251 1110.78 2544 2472 611.1
D 12 233 211909 342.73 2544 2472 611.1

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