ASTROSAT CZTI

Data Quality Report

Orbit 39589

Creation date: 2024-06-27T22:06:31.267916
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_9000005488_39589cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39589cztM0_level2_quad_clean.evt
Size (bytes)408,885,12096,163,200
Size389.9 MB 91.7 MB
Events in quadrant A3,766,271649,593
Events in quadrant B2,706,879676,624
Events in quadrant C5,417,453600,457
Events in quadrant D2,816,562599,109

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147383
B0118082
C0199492
D0120832

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A55111893.429505%
B5511360.653239%
C55115219.453820%
D5511260.471784%

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 7364 5512 143 143 1.94% 2.59%
B 7364 5512 19 19 0.26% 0.34%
C 7364 5512 506 506 6.87% 9.18%
D 7364 5512 15 15 0.20% 0.27%

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 9 143 676196 5307.77 618 604 127.3
A 10 83 461039 3617.39 618 604 127.3
A 15 222 140099 1095.94 618 604 127.3
B 5 172 197303 1664.19 619 602 118.2
B 5 255 73269 614.8 619 602 118.2
B 12 111 14313 116.0 619 602 118.2
C 9 187 1611510 11735.99 598 605 137.3
C 15 208 1207404 8791.94 598 605 137.3
C 15 214 240767 1749.66 598 605 137.3
D 1 52 110169 726.4 617 600 150.8
D 13 171 73283 481.86 617 600 150.8
D 2 249 59753 392.16 617 600 150.8

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