ASTROSAT CZTI

Data Quality Report

Orbit 08082

Creation date: 2024-06-27T15:27:43.116195
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/AS1A02_055T01_9000001114_08082cztM0_level2.evt modeM0/AS1A02_055T01_9000001114_08082cztM0_level2_quad_clean.evt
Size (bytes)542,122,560118,160,640
Size517.0 MB 112.7 MB
Events in quadrant A3,767,607739,118
Events in quadrant B3,988,699762,126
Events in quadrant C3,856,296770,852
Events in quadrant D4,246,547734,549

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171503
B0175972
C0172702
D0187932

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82321381.676385%
B82322162.623907%
C8232941.141885%
D82321982.405248%

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 8547 8236 0 0 0.00% 0.00%
B 8547 8236 15 15 0.18% 0.18%
C 8547 8236 0 0 0.00% 0.00%
D 8547 8236 97 97 1.13% 1.18%

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 0 226 9020 39.68 979 952 203.3
A 12 194 8887 39.03 979 952 203.3
A 3 137 3943 14.71 979 952 203.3
B 10 16 69455 358.13 992 967 191.2
B 11 51 38400 195.74 992 967 191.2
B 12 111 21475 107.24 992 967 191.2
C 9 68 33610 144.56 964 971 225.8
C 1 16 31072 133.32 964 971 225.8
C 8 128 16253 67.69 964 971 225.8
D 1 52 522958 2079.3 942 919 251.1
D 7 71 75630 297.58 942 919 251.1
D 12 233 31793 122.97 942 919 251.1

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