ASTROSAT CZTI

Data Quality Report

Orbit 20220424_A11_046T08_9000005088_level2

Creation date: 2022-04-27T14:17:50.380516
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_046T08_9000005088cztM0_level2_bc.evt modeM0/AS1A11_046T08_9000005088cztM0_level2_quad_clean.evt
Size (bytes)1,755,377,280451,203,840
Size1.6 GB 430.3 MB
Events in quadrant A11,171,7842,813,804
Events in quadrant B10,035,3912,891,072
Events in quadrant C9,530,2232,977,967
Events in quadrant D20,176,8562,715,482

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0837340
B0815590
C0722850
D01111590

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06700
B06700
C06700
D06700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3300515994.844720%
B3300513994.238752%
C330052980.902894%
D33005370011.210423%

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 44538 33012 143 143 0.32% 0.43%
B 44538 33005 81 81 0.18% 0.25%
C 44538 33006 56 56 0.13% 0.17%
D 44538 33004 1372 1372 3.08% 4.16%

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 15 169 3783376 10529.59 1609 1583 359.2
A 10 83 645884 1793.92 1609 1583 359.2
A 15 237 310428 859.91 1609 1583 359.2
B 5 236 1832497 5636.98 1630 1596 324.8
B 5 172 863544 2653.77 1630 1596 324.8
B 5 200 364907 1118.56 1630 1596 324.8
C 15 214 1398563 3740.34 1634 1619 373.5
C 0 10 1016803 2718.17 1634 1619 373.5
C 14 128 189643 503.44 1634 1619 373.5
D 12 235 10485795 27967.75 1558 1511 374.9
D 8 195 1085378 2891.31 1558 1511 374.9
D 2 250 556444 1480.33 1558 1511 374.9

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