ASTROSAT CZTI

Data Quality Report

Orbit 42497

Creation date: 2024-06-27T22:40:52.108819
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/AS1C07_001T10_9000005806_42497cztM0_level2.fits modeM0/AS1C07_001T10_9000005806_42497cztM0_level2_quad_clean.evt
Size (bytes)886,403,520246,012,480
Size845.3 MB 234.6 MB
Events in quadrant A8,334,7001,629,706
Events in quadrant B7,078,2121,660,121
Events in quadrant C7,149,6921,611,948
Events in quadrant D9,037,0521,468,535

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0530
B0540
C0540
D0540

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03180
B03180
C03180
D03180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0348084
B0328384
C0318294
D0389794

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15631260.166336%
B15631790.505406%
C15631190.121553%
D156316013.844924%

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 19810 15634 9 9 0.05% 0.06%
B 19810 15634 41 41 0.21% 0.26%
C 19810 15634 9 9 0.05% 0.06%
D 19810 15634 453 453 2.29% 2.90%

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 1451446 4305.08 1649 1615 336.8
A 12 189 296459 875.5 1649 1615 336.8
A 13 248 70512 204.58 1649 1615 336.8
B 5 255 270844 861.86 1630 1583 312.4
B 0 245 140329 444.1 1630 1583 312.4
B 5 172 88123 277.0 1630 1583 312.4
C 15 214 637466 1715.45 1606 1615 370.7
C 9 54 114066 303.38 1606 1615 370.7
C 14 254 64716 170.24 1606 1615 370.7
D 2 249 1193458 3046.35 1594 1547 391.3
D 12 233 379963 967.18 1594 1547 391.3
D 10 118 347012 882.96 1594 1547 391.3

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