ASTROSAT CZTI

Data Quality Report

Orbit 26242

Creation date: 2024-06-27T19:26:31.037042
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/AS1A09_079T03_9000003790_26242cztM0_level2.evt modeM0/AS1A09_079T03_9000003790_26242cztM0_level2_quad_clean.evt
Size (bytes)504,247,680114,252,480
Size480.9 MB 109.0 MB
Events in quadrant A3,458,508756,454
Events in quadrant B3,300,129800,424
Events in quadrant C3,463,712768,426
Events in quadrant D4,628,595702,425

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142360
B0136940
C0142980
D0180160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6197801.290947%
B6197590.952074%
C61971181.904147%
D61974757.664999%

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 7527 6198 64 64 0.85% 1.03%
B 7527 6198 14 14 0.19% 0.23%
C 7527 6198 6 6 0.08% 0.10%
D 7527 6198 437 437 5.81% 7.05%

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 13 323986 2011.92 809 796 160.6
A 13 254 9964 57.07 809 796 160.6
A 13 170 7180 39.74 809 796 160.6
B 5 172 58576 377.45 823 805 153.1
B 12 111 17413 108.51 823 805 153.1
B 0 230 15957 99.0 823 805 153.1
C 3 233 163887 884.64 795 803 184.3
C 14 238 129730 699.36 795 803 184.3
C 2 16 55862 298.67 795 803 184.3
D 1 52 1302894 7204.93 762 746 180.7
D 13 168 332100 1833.42 762 746 180.7
D 12 233 54734 298.72 762 746 180.7

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