ASTROSAT CZTI

Data Quality Report

Orbit 12511

Creation date: 2024-06-27T16:28:28.113664
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/AS1T01_218T01_9000001852_12511cztM0_level2.evt modeM0/AS1T01_218T01_9000001852_12511cztM0_level2_quad_clean.evt
Size (bytes)532,644,48078,932,160
Size508.0 MB 75.3 MB
Events in quadrant A3,815,320475,965
Events in quadrant B3,906,707483,176
Events in quadrant C3,311,104475,190
Events in quadrant D4,605,516450,385

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158942
B0161541
C0149871
D0186721

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72681572.160154%
B72682363.247111%
C72681391.912493%
D72682783.824986%

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 7484 7269 0 0 0.00% 0.00%
B 7484 7269 36 36 0.48% 0.50%
C 7484 7270 8 8 0.11% 0.11%
D 7484 7270 116 116 1.55% 1.60%

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 12 189 330890 1861.43 867 845 177.3
A 1 162 46940 259.97 867 845 177.3
A 1 178 26816 146.47 867 845 177.3
B 4 239 332879 1987.38 863 841 167.1
B 11 51 62118 366.77 863 841 167.1
B 0 218 42239 247.78 863 841 167.1
C 14 234 53933 272.68 835 835 194.7
C 13 61 6121 27.14 835 835 194.7
C 12 4 2324 7.64 835 835 194.7
D 1 255 780773 3869.5 829 804 201.6
D 1 52 311388 1540.83 829 804 201.6
D 14 34 180435 891.16 829 804 201.6

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