ASTROSAT CZTI

Data Quality Report

Orbit 41531

Creation date: 2024-06-27T22:30:07.784328
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_035T02_9000005676_41531cztM0_level2.fits modeM0/AS1A12_035T02_9000005676_41531cztM0_level2_quad_clean.evt
Size (bytes)332,847,36094,412,160
Size317.4 MB 90.0 MB
Events in quadrant A2,917,341658,428
Events in quadrant B2,797,641666,697
Events in quadrant C3,173,331596,006
Events in quadrant D3,029,623575,692

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118093
B0117012
C0124612
D0124452

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5174230.444530%
B5174440.850406%
C51742224.290684%
D51741132.183997%

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 7116 5175 6 6 0.08% 0.12%
B 7116 5175 18 18 0.25% 0.35%
C 7116 5175 217 217 3.05% 4.19%
D 7116 5175 113 113 1.59% 2.18%

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 10 83 523947 4172.2 613 602 125.4
A 2 79 9837 73.62 613 602 125.4
A 13 254 9449 70.53 613 602 125.4
B 0 186 179077 1556.78 608 593 114.6
B 0 190 142036 1233.7 608 593 114.6
B 5 255 42763 367.82 608 593 114.6
C 0 10 533048 4016.61 574 580 132.6
C 15 214 220978 1662.55 574 580 132.6
C 14 254 155404 1167.9 574 580 132.6
D 5 222 184367 1295.24 587 571 141.9
D 1 47 125917 883.34 587 571 141.9
D 12 233 101149 708.79 587 571 141.9

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