ASTROSAT CZTI

Data Quality Report

Orbit 38001

Creation date: 2024-06-27T21:47:10.599530
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/AS1A11_082T01_9000005356_38001cztM0_level2.fits modeM0/AS1A11_082T01_9000005356_38001cztM0_level2_quad_clean.evt
Size (bytes)367,392,96089,631,360
Size350.4 MB 85.5 MB
Events in quadrant A3,592,665607,952
Events in quadrant B2,922,231609,324
Events in quadrant C2,568,334619,856
Events in quadrant D4,124,030523,617

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143723
B0118342
C0105502
D0155382

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5044320.634417%
B50441863.687550%
C504460.118953%
D50444068.049167%

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 7017 5045 18 18 0.26% 0.36%
B 7017 5045 163 163 2.32% 3.23%
C 7017 5045 5 5 0.07% 0.10%
D 7017 5045 331 331 4.72% 6.56%

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 15 222 489767 4119.71 586 574 118.7
A 10 83 376590 3166.6 586 574 118.7
A 12 16 302267 2540.69 586 574 118.7
B 5 172 460272 4188.12 575 560 109.8
B 5 184 47077 423.78 575 560 109.8
B 5 255 42050 377.99 575 560 109.8
C 15 214 217976 1635.99 574 576 132.9
C 14 254 60884 453.83 574 576 132.9
C 1 23 21599 158.2 574 576 132.9
D 1 52 1607802 11778.06 553 537 136.5
D 7 223 108265 789.43 553 537 136.5
D 13 249 62194 451.82 553 537 136.5

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