ASTROSAT CZTI

Data Quality Report

Orbit 01260

Creation date: 2024-06-27T14:09:58.677641
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_011T02_9000000226_01260cztM0_level2.evt modeM0/AS1G04_011T02_9000000226_01260cztM0_level2_quad_clean.evt
Size (bytes)1,149,341,76094,109,760
Size1.1 GB 89.8 MB
Events in quadrant A7,491,160632,358
Events in quadrant B7,734,472643,174
Events in quadrant C7,333,093628,558
Events in quadrant D11,854,095527,496

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0264962
B0272281
C0259921
D0396671

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5972560.937709%
B5972440.736772%
C5972250.418620%
D5972161226.992632%

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 7146 5971 329 329 4.60% 5.51%
B 7146 5971 327 327 4.58% 5.48%
C 7147 5972 217 217 3.04% 3.63%
D 7147 5972 2625 2625 36.73% 43.96%

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 4 32 314576 709.66 1864 1873 440.6
A 12 243 10544 19.68 1864 1873 440.6
A 13 9 10220 18.94 1864 1873 440.6
B 6 53 117329 256.26 1935 1936 450.3
B 8 4 101705 221.56 1935 1936 450.3
B 15 22 65339 140.8 1935 1936 450.3
C 15 241 253361 507.25 1793 1853 495.8
C 3 79 33577 63.98 1793 1853 495.8
C 3 111 25260 47.21 1793 1853 495.8
D 12 22 3794463 7676.23 1600 1657 494.1
D 13 169 942910 1904.99 1600 1657 494.1
D 10 84 669495 1351.63 1600 1657 494.1

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