ASTROSAT CZTI

Data Quality Report

Orbit 20220905_A09_061T01_9000005330_level2

Creation date: 2022-09-13T12:21:09.379813
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/AS1A09_061T01_9000005330cztM0_level2_bc.evt modeM0/AS1A09_061T01_9000005330cztM0_level2_quad_clean.evt
Size (bytes)3,803,901,120981,011,520
Size3.5 GB 935.6 MB
Events in quadrant A22,189,2216,297,006
Events in quadrant B21,976,2686,392,213
Events in quadrant C21,968,0536,347,105
Events in quadrant D44,042,6125,609,694

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015220
B015210
C015210
D015220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03040
B03030
C03040
D03050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01697210
B01764410
C01674250
D02620560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A738605430.735175%
B7393522032.979644%
C7386910271.390299%
D737601189316.123915%

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 116483 74365 30 30 0.03% 0.04%
B 116483 74382 68 68 0.06% 0.09%
C 116483 74362 160 160 0.14% 0.22%
D 116483 74156 4640 4640 3.98% 6.26%

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 3597276 4145.28 3831 3753 866.9
A 15 222 1995731 2297.83 3831 3753 866.9
A 13 248 565747 648.28 3831 3753 866.9
B 5 172 3284684 4280.26 3850 3762 766.5
B 0 229 744165 965.92 3850 3762 766.5
B 0 213 660412 856.66 3850 3762 766.5
C 15 214 2996642 3445.03 3777 3743 868.8
C 14 254 2620590 3012.17 3777 3743 868.8
C 0 10 771267 883.47 3777 3743 868.8
D 12 227 17786619 22075.36 3451 3334 805.6
D 2 249 4139124 5133.98 3451 3334 805.6
D 12 233 2664739 3303.75 3451 3334 805.6

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