ASTROSAT CZTI

Data Quality Report

Orbit 38509

Creation date: 2024-06-27T21:53:42.364162
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/AS1A12_018T01_9000005386_38509cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38509cztM0_level2_quad_clean.evt
Size (bytes)347,604,48094,953,600
Size331.5 MB 90.6 MB
Events in quadrant A2,924,883654,598
Events in quadrant B2,715,712662,239
Events in quadrant C2,743,636624,855
Events in quadrant D4,040,041535,861

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121443
B0119482
C0116472
D0159282

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5685130.228672%
B5685250.439754%
C5685140.246262%
D56854728.302551%

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 7268 5686 7 7 0.10% 0.12%
B 7268 5686 14 14 0.19% 0.25%
C 7268 5686 10 10 0.14% 0.18%
D 7268 5686 433 433 5.96% 7.62%

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 429926 3356.51 631 618 127.9
A 12 189 29849 228.54 631 618 127.9
A 13 6 17689 133.47 631 618 127.9
B 8 3 65935 541.53 628 611 120.6
B 0 183 62060 509.41 628 611 120.6
B 0 213 47234 386.5 628 611 120.6
C 15 214 239211 1673.0 614 617 142.6
C 0 10 46969 325.02 614 617 142.6
C 14 254 34552 237.95 614 617 142.6
D 12 233 962897 6553.03 597 580 146.9
D 13 249 321166 2183.07 597 580 146.9
D 12 235 306859 2085.65 597 580 146.9

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