ASTROSAT CZTI

Data Quality Report

Orbit 31542

Creation date: 2024-06-27T20:29:45.619302
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/AS1A10_056T01_9000004598_31542cztM0_level2.evt modeM0/AS1A10_056T01_9000004598_31542cztM0_level2_quad_clean.evt
Size (bytes)560,093,760103,472,640
Size534.1 MB 98.7 MB
Events in quadrant A3,199,782688,621
Events in quadrant B5,158,438702,444
Events in quadrant C3,812,925648,229
Events in quadrant D4,349,693639,471

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135892
B0200412
C0153282
D0172342

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0221
B0233
C0231
D0232

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6524290.444513%
B65241301.992643%
C65242914.460454%
D6524350.536481%

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 7829 6525 0 0 0.00% 0.00%
B 7829 6525 2 2 0.03% 0.03%
C 7829 6525 164 164 2.09% 2.51%
D 7829 6525 14 14 0.18% 0.21%

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 13 254 11609 65.9 827 813 163.8
A 3 137 7965 43.66 827 813 163.8
A 0 226 6718 36.05 827 813 163.8
B 6 159 1763645 11429.55 829 809 154.2
B 4 80 71892 460.87 829 809 154.2
B 0 190 30582 193.04 829 809 154.2
C 0 10 362364 2017.22 780 788 179.2
C 10 22 227923 1267.18 780 788 179.2
C 14 238 127934 709.34 780 788 179.2
D 8 195 1271290 6862.87 790 768 185.1
D 2 250 53026 282.28 790 768 185.1
D 2 234 25431 133.22 790 768 185.1

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