ASTROSAT CZTI

Data Quality Report

Orbit 20049

Creation date: 2024-06-27T18:10:35.209023
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/AS1T03_117T01_9000002988_20049cztM0_level2.evt modeM0/AS1T03_117T01_9000002988_20049cztM0_level2_quad_clean.evt
Size (bytes)486,984,96093,758,400
Size464.4 MB 89.4 MB
Events in quadrant A3,402,245611,311
Events in quadrant B3,700,793612,330
Events in quadrant C3,486,701583,548
Events in quadrant D3,721,055582,472

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139862
B0148452
C0141642
D0149922

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6442761.179758%
B64421402.173238%
C64421302.018007%
D6442791.226327%

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 7582 6443 3 3 0.04% 0.05%
B 7582 6443 43 43 0.57% 0.67%
C 7582 6443 3 3 0.04% 0.05%
D 7582 6443 15 15 0.20% 0.23%

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 14 238 55385 314.45 867 852 173.4
A 0 226 7545 38.59 867 852 173.4
A 13 254 7478 38.21 867 852 173.4
B 10 245 310235 1873.21 858 837 165.2
B 0 198 24625 144.02 858 837 165.2
B 4 80 20656 119.99 858 837 165.2
C 14 238 130596 668.45 834 842 194.1
C 4 254 96276 491.64 834 842 194.1
C 3 233 9265 43.39 834 842 194.1
D 2 184 313074 1536.52 849 828 203.2
D 12 218 74283 361.46 849 828 203.2
D 1 52 50127 242.59 849 828 203.2

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