ASTROSAT CZTI

Data Quality Report

Orbit 51202

Creation date: 2025-03-17T13:10:44.005671
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_001T01_9000006454_51202cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51202cztM0_level2_quad_clean.evt
Size (bytes)681,160,32091,955,520
Size649.6 MB 87.7 MB
Events in quadrant A4,235,109630,116
Events in quadrant B7,394,743624,275
Events in quadrant C8,471,170508,896
Events in quadrant D4,600,155557,903

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171034
B0266662
C0298142
D0183352

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66341041.567682%
B663595514.393369%
C6635144221.733233%
D66353455.199699%

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 8609 6636 65 65 0.76% 0.98%
B 8610 6637 651 651 7.56% 9.81%
C 8610 6636 1283 1283 14.90% 19.33%
D 8610 6637 272 272 3.16% 4.10%

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 12 3 622708 3569.59 701 683 174.3
A 13 248 198018 1132.44 701 683 174.3
A 9 160 171847 982.25 701 683 174.3
B 10 254 1927834 13323.53 679 656 144.6
B 8 128 1360721 9402.8 679 656 144.6
B 0 213 452322 3122.59 679 656 144.6
C 4 12 3419934 19846.69 634 631 172.3
C 15 253 834085 4837.62 634 631 172.3
C 10 171 544707 3157.98 634 631 172.3
D 2 216 521368 2708.61 670 644 192.2
D 2 62 382757 1987.61 670 644 192.2
D 8 176 237384 1231.43 670 644 192.2

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