ASTROSAT CZTI

Data Quality Report

Orbit 39716

Creation date: 2024-06-27T22:08:08.814638
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_022T01_9000005494_39716cztM0_level2.fits modeM0/AS1A12_022T01_9000005494_39716cztM0_level2_quad_clean.evt
Size (bytes)407,188,80089,055,360
Size388.3 MB 84.9 MB
Events in quadrant A3,322,454602,110
Events in quadrant B2,687,294619,392
Events in quadrant C4,918,478562,167
Events in quadrant D3,717,505528,374

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131901
B0117690
C0184960
D0150410

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5495841.528662%
B5495380.691538%
C54953396.169245%
D54952143.894449%

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 7047 5496 62 62 0.88% 1.13%
B 7047 5496 33 33 0.47% 0.60%
C 7047 5496 299 299 4.24% 5.44%
D 7047 5496 190 190 2.70% 3.46%

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 392024 3137.46 605 593 124.8
A 15 174 361257 2890.85 605 593 124.8
A 9 143 224242 1792.63 605 593 124.8
B 5 172 222787 1886.47 601 584 117.8
B 0 190 54195 455.15 601 584 117.8
B 5 255 19932 164.26 601 584 117.8
C 9 187 1530883 11364.57 575 579 134.7
C 15 208 835751 6202.28 575 579 134.7
C 15 214 220009 1629.56 575 579 134.7
D 12 227 1135243 7959.37 580 561 142.6
D 2 250 193244 1351.6 580 561 142.6
D 12 233 84770 590.69 580 561 142.6

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