ASTROSAT CZTI

Data Quality Report

Orbit 33326

Creation date: 2024-06-27T20:47:36.223169
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/AS1T04_071T01_9000004782_33326cztM0_level2.evt modeM0/AS1T04_071T01_9000004782_33326cztM0_level2_quad_clean.evt
Size (bytes)615,024,00069,877,440
Size586.5 MB 66.6 MB
Events in quadrant A3,291,536459,984
Events in quadrant B4,905,371408,584
Events in quadrant C4,943,877425,520
Events in quadrant D5,100,248422,890

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133823
B0181962
C0184392
D0191482

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5697170.298403%
B569787315.323855%
C56974588.039319%
D56973045.336142%

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 7160 5698 6 6 0.08% 0.11%
B 7160 5698 530 530 7.40% 9.30%
C 7160 5698 391 391 5.46% 6.86%
D 7160 5698 257 257 3.59% 4.51%

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 15 169 655805 4856.49 670 657 134.9
A 15 17 38977 284.06 670 657 134.9
A 13 254 7708 52.27 670 657 134.9
B 5 172 1426763 12014.29 627 612 118.7
B 0 219 948676 7986.75 627 612 118.7
B 5 200 24651 202.51 627 612 118.7
C 1 23 1133838 7839.43 626 631 144.6
C 10 49 546831 3778.57 626 631 144.6
C 15 214 260616 1798.56 626 631 144.6
D 8 195 1349479 8199.31 636 620 164.5
D 2 250 325318 1973.74 636 620 164.5
D 12 233 303469 1840.93 636 620 164.5

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