ASTROSAT CZTI

Data Quality Report

Orbit 02595

Creation date: 2024-06-27T14:20:00.042708
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/AS1T01_071T01_9000000382_02595cztM0_level2.evt modeM0/AS1T01_071T01_9000000382_02595cztM0_level2_quad_clean.evt
Size (bytes)452,482,56082,103,040
Size431.5 MB 78.3 MB
Events in quadrant A3,243,755495,319
Events in quadrant B3,313,783502,784
Events in quadrant C3,224,004505,168
Events in quadrant D3,435,520485,100

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148201
B0149120
C0148420
D0153410

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71521902.656600%
B71521652.307047%
C7152710.992729%
D71521051.468121%

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 7152 7152 0 0 0.00% 0.00%
B 7152 7152 3 3 0.04% 0.04%
C 7152 7152 2 2 0.03% 0.03%
D 7152 7152 13 13 0.18% 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 3 1 26026 145.79 834 812 172.9
A 12 194 9324 49.22 834 812 172.9
A 0 226 8973 47.19 834 812 172.9
B 15 54 14862 84.98 845 820 165.2
B 12 111 11698 65.83 845 820 165.2
B 0 171 11500 64.63 845 820 165.2
C 10 65 24562 126.03 811 813 188.4
C 12 4 16489 83.19 811 813 188.4
C 13 61 7250 34.16 811 813 188.4
D 2 136 107975 554.48 806 783 193.3
D 2 54 93060 477.33 806 783 193.3
D 2 184 74331 380.45 806 783 193.3

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