ASTROSAT CZTI

Data Quality Report

Orbit 40343

Creation date: 2024-06-27T22:15:06.230810
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_056T02_9000005538_40343cztM0_level2.fits modeM0/AS1A12_056T02_9000005538_40343cztM0_level2_quad_clean.evt
Size (bytes)456,131,52095,371,200
Size435.0 MB 91.0 MB
Events in quadrant A3,316,863688,900
Events in quadrant B2,646,543709,063
Events in quadrant C3,087,065662,758
Events in quadrant D7,412,754448,228

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132553
B0112042
C0123592
D0256612

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5416671.237075%
B5416210.387740%
C54161092.012555%
D5416168031.019202%

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 7358 5417 53 53 0.72% 0.98%
B 7358 5417 12 12 0.16% 0.22%
C 7358 5417 81 81 1.10% 1.50%
D 7357 5415 1737 1737 23.61% 32.08%

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 494290 3823.33 643 632 129.1
A 13 248 185771 1433.88 643 632 129.1
A 6 10 76016 583.84 643 632 129.1
B 0 230 51053 417.18 639 623 120.9
B 0 245 42875 349.53 639 623 120.9
B 4 170 25228 203.54 639 623 120.9
C 14 254 408693 2875.14 617 622 141.9
C 15 214 246237 1730.53 617 622 141.9
C 0 10 13209 88.68 617 622 141.9
D 12 233 3527243 26944.26 535 522 130.9
D 12 227 1527667 11667.44 535 522 130.9
D 2 250 109069 829.3 535 522 130.9

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