ASTROSAT CZTI

Data Quality Report

Orbit 20240224_C02_002T01_9000006092_level2

Creation date: 2024-02-27T14:23:56.671186
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/AS1C02_002T01_9000006092cztM0_level2.fits modeM0/AS1C02_002T01_9000006092cztM0_level2_quad_clean.evt
Size (bytes)132,292,800103,512,960
Size126.2 MB 98.7 MB
Events in quadrant A777,282555,163
Events in quadrant B763,684555,232
Events in quadrant C795,086541,392
Events in quadrant D671,196482,814

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0485030
B0335840
C0302380
D0389710

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02960
B02960
C02960
D02960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A144695593.863432%
B144704192.895646%
C14469860.594374%
D144693442.377497%

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 22102 14470 0 0 0.00% 0.00%
B 22102 14470 0 0 0.00% 0.00%
C 22100 14468 0 0 0.00% 0.00%
D 22101 14469 0 0 0.00% 0.00%

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 7 110 631 8.35 202 190 52.8
A 14 95 613 8.01 202 190 52.8
A 15 236 606 7.88 202 190 52.8
B 2 9 668 11.28 202 192 42.2
B 5 128 575 9.07 202 192 42.2
B 2 8 572 9.0 202 192 42.2
C 1 81 616 7.59 209 194 55.6
C 3 202 593 7.18 209 194 55.6
C 3 203 583 7.0 209 194 55.6
D 3 14 533 6.56 192 175 54.6
D 10 189 490 5.77 192 175 54.6
D 4 16 486 5.7 192 175 54.6

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