ASTROSAT CZTI

Data Quality Report

Orbit 04883

Creation date: 2024-06-27T14:48:25.395600
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_237T01_9000000620_04883cztM0_level2.evt modeM0/AS1G05_237T01_9000000620_04883cztM0_level2_quad_clean.evt
Size (bytes)514,667,52090,544,320
Size490.8 MB 86.3 MB
Events in quadrant A3,613,423571,999
Events in quadrant B3,591,658576,938
Events in quadrant C3,102,528573,809
Events in quadrant D4,811,875539,788

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154042
B0152781
C0140781
D0191551

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68791221.773514%
B6879630.915831%
C6879160.232592%
D68796509.449048%

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 7194 6880 79 79 1.10% 1.15%
B 7194 6880 0 0 0.00% 0.00%
C 7194 6880 0 0 0.00% 0.00%
D 7194 6879 479 479 6.66% 6.96%

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 0 50 412723 2455.55 807 790 167.8
A 3 1 56755 333.61 807 790 167.8
A 12 133 15384 87.0 807 790 167.8
B 15 204 237502 1480.99 823 804 159.8
B 4 80 48319 297.3 823 804 159.8
B 0 228 37939 232.35 823 804 159.8
C 12 4 13558 69.07 787 793 184.8
C 13 61 6482 30.78 787 793 184.8
C 1 16 5842 27.32 787 793 184.8
D 1 52 1081869 5866.51 741 719 184.3
D 2 136 337058 1825.03 741 719 184.3
D 13 235 335296 1815.47 741 719 184.3

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