ASTROSAT CZTI

Data Quality Report

Orbit 01231

Creation date: 2024-06-27T14:09:30.139582
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/AS1G04_003T02_9000000224_01231cztM0_level2.evt modeM0/AS1G04_003T02_9000000224_01231cztM0_level2_quad_clean.evt
Size (bytes)962,565,12098,599,680
Size918.0 MB 94.0 MB
Events in quadrant A7,347,415651,219
Events in quadrant B7,623,137654,811
Events in quadrant C7,226,639627,778
Events in quadrant D6,539,592616,833

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0262832
B0270821
C0258831
D0238911

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6243120.192215%
B6243180.288323%
C624360.096108%
D624310.016018%

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 7473 6244 188 188 2.52% 3.01%
B 7473 6244 228 228 3.05% 3.65%
C 7473 6244 194 194 2.60% 3.11%
D 7473 6244 106 106 1.42% 1.70%

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 12 243 47377 100.14 1900 1916 454.0
A 11 79 7896 13.17 1900 1916 454.0
A 12 133 6300 9.66 1900 1916 454.0
B 5 191 50385 104.53 1969 1979 463.1
B 15 22 47991 99.36 1969 1979 463.1
B 14 3 22117 43.49 1969 1979 463.1
C 15 241 332214 679.38 1752 1810 486.3
C 3 111 20583 38.6 1752 1810 486.3
C 3 79 17105 31.45 1752 1810 486.3
D 12 22 109672 204.54 1703 1763 527.6
D 6 6 34574 62.19 1703 1763 527.6
D 10 84 10385 16.34 1703 1763 527.6

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