ASTROSAT CZTI

Data Quality Report

Orbit 04023

Creation date: 2024-06-27T14:36:27.368045
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/AS1G05_173T01_9000000514_04023cztM0_level2.evt modeM0/AS1G05_173T01_9000000514_04023cztM0_level2_quad_clean.evt
Size (bytes)398,142,72064,978,560
Size379.7 MB 62.0 MB
Events in quadrant A3,016,271388,524
Events in quadrant B2,968,663397,430
Events in quadrant C2,795,256387,371
Events in quadrant D2,862,156367,692

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130103
B0127452
C0124812
D0129312

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6106310.507697%
B6106230.376679%
C610640.065509%
D6106340.556829%

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 7416 6107 18 18 0.24% 0.29%
B 7416 6107 3 3 0.04% 0.05%
C 7416 6107 1 1 0.01% 0.02%
D 7416 6107 11 11 0.15% 0.18%

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 50 92492 612.65 735 723 149.8
A 0 118 60805 401.11 735 723 149.8
A 0 226 13161 83.04 735 723 149.8
B 4 81 36296 252.81 746 730 140.7
B 15 204 24827 171.28 746 730 140.7
B 12 111 11343 75.44 746 730 140.7
C 9 144 21562 128.27 706 711 162.6
C 10 65 13428 78.23 706 711 162.6
C 13 61 5982 32.43 706 711 162.6
D 2 14 83730 498.41 697 677 166.6
D 10 246 44411 262.45 697 677 166.6
D 2 232 34807 204.82 697 677 166.6

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