ASTROSAT CZTI

Data Quality Report

Orbit 04935

Creation date: 2024-06-27T14:49:02.623266
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/AS1G05_021T01_9000000624_04935cztM0_level2.evt modeM0/AS1G05_021T01_9000000624_04935cztM0_level2_quad_clean.evt
Size (bytes)837,544,32097,009,920
Size798.7 MB 92.5 MB
Events in quadrant A7,685,560509,982
Events in quadrant B3,055,666717,860
Events in quadrant C10,081,960602,151
Events in quadrant D4,130,752679,796

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0269392
B0130091
C0341711
D0164461

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6101217535.649893%
B6101631.032618%
C6101219135.912146%
D61012423.966563%

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 7405 6100 2078 2078 28.06% 34.07%
B 7406 6101 7 7 0.09% 0.11%
C 7406 6101 2183 2183 29.48% 35.78%
D 7406 6101 194 194 2.62% 3.18%

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 0 31 5529002 50502.23 543 531 109.5
A 13 251 26229 234.75 543 531 109.5
A 0 50 19484 173.13 543 531 109.5
B 15 204 44262 312.19 739 723 139.5
B 4 80 38504 270.9 739 723 139.5
B 0 219 36279 254.95 739 723 139.5
C 9 247 7609767 53492.84 628 630 142.2
C 1 16 12458 83.15 628 630 142.2
C 12 4 5326 33.01 628 630 142.2
D 2 33 760223 4356.25 710 688 174.4
D 13 53 219254 1253.57 710 688 174.4
D 7 67 103509 589.72 710 688 174.4

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