ASTROSAT CZTI

Data Quality Report

Orbit 20220804_A11_046T02_9000005274_level2

Creation date: 2022-08-06T10:32:13.569228
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/AS1A11_046T02_9000005274cztM0_level2_bc.evt modeM0/AS1A11_046T02_9000005274cztM0_level2_quad_clean.evt
Size (bytes)2,801,476,800530,743,680
Size2.6 GB 506.2 MB
Events in quadrant A12,291,1383,373,221
Events in quadrant B14,858,7733,369,547
Events in quadrant C19,828,6013,284,558
Events in quadrant D34,689,1992,841,000

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01690
B01690
C01690
D01690

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09560
B09560
C09560
D09560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01011880
B01161850
C01280480
D02061280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A46679870.186379%
B4667415493.318764%
C4667825935.555079%
D466791139324.407121%

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 63648 46690 4 4 0.01% 0.01%
B 63648 46679 80 80 0.13% 0.17%
C 63648 46674 923 923 1.45% 1.98%
D 63648 46650 937 937 1.47% 2.01%

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 1751642 3198.0 2483 2447 547.0
A 11 254 647255 1178.88 2483 2447 547.0
A 9 143 105708 188.79 2483 2447 547.0
B 5 172 2144278 4411.82 2463 2413 485.5
B 5 184 1568050 3224.9 2463 2413 485.5
B 0 229 488011 1000.24 2463 2413 485.5
C 10 20 4265284 8007.29 2351 2336 532.4
C 15 214 1824847 3423.31 2351 2336 532.4
C 14 254 1720954 3228.16 2351 2336 532.4
D 12 17 11546383 22438.24 2156 2092 514.5
D 6 112 4846603 9416.11 2156 2092 514.5
D 1 52 4128232 8019.84 2156 2092 514.5

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