ASTROSAT CZTI

Data Quality Report

Orbit 06581

Creation date: 2024-06-27T15:09:02.244703
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/AS1C02_008T01_9000000884_06581cztM0_level2.evt modeM0/AS1C02_008T01_9000000884_06581cztM0_level2_quad_clean.evt
Size (bytes)435,029,76088,577,280
Size414.9 MB 84.5 MB
Events in quadrant A3,151,044561,979
Events in quadrant B3,326,373567,552
Events in quadrant C2,977,330552,079
Events in quadrant D3,268,143537,366

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139643
B0143022
C0136002
D0142832

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66421051.580849%
B66421111.671183%
C6642420.632340%
D6643791.189222%

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 7657 6643 20 20 0.26% 0.30%
B 7657 6643 27 27 0.35% 0.41%
C 7657 6643 0 0 0.00% 0.00%
D 7658 6644 13 13 0.17% 0.20%

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 14 111 75984 465.9 790 773 161.4
A 8 15 27908 168.09 790 773 161.4
A 0 226 7601 42.29 790 773 161.4
B 4 172 103694 664.0 793 773 155.0
B 0 219 33173 209.03 793 773 155.0
B 4 81 29871 187.73 793 773 155.0
C 13 61 5982 29.18 761 764 178.8
C 1 16 5441 26.16 761 764 178.8
C 9 54 3715 16.5 761 764 178.8
D 2 33 118155 618.9 767 743 189.7
D 8 195 68677 358.09 767 743 189.7
D 2 152 60421 314.57 767 743 189.7

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