ASTROSAT CZTI

Data Quality Report

Orbit 16920

Creation date: 2024-06-27T17:29:30.956944
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/AS1T03_030T01_9000002512_16920cztM0_level2.evt modeM0/AS1T03_030T01_9000002512_16920cztM0_level2_quad_clean.evt
Size (bytes)737,444,16036,299,520
Size703.3 MB 34.6 MB
Events in quadrant A11,209,357141,955
Events in quadrant B3,504,194180,063
Events in quadrant C3,385,112166,550
Events in quadrant D3,801,036161,955

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0377732
B0141663
C0137852
D0152642

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6407342753.488372%
B6407671.045731%
C6407841.311066%
D6407951.482753%

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 7728 6409 2479 2479 32.08% 38.68%
B 7728 6409 1 1 0.01% 0.02%
C 7728 6409 0 0 0.00% 0.00%
D 7728 6409 50 50 0.65% 0.78%

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 15 174 8430040 58777.76 721 709 143.4
A 15 190 6826 42.65 721 709 143.4
A 0 226 6262 38.72 721 709 143.4
B 15 35 72116 432.99 875 856 164.6
B 12 111 18566 107.61 875 856 164.6
B 11 111 16048 92.31 875 856 164.6
C 14 238 132420 697.13 820 828 188.8
C 3 233 54128 282.36 820 828 188.8
C 13 61 5955 27.16 820 828 188.8
D 1 52 472970 2353.44 826 802 200.6
D 2 152 107603 532.33 826 802 200.6
D 12 235 92194 455.53 826 802 200.6

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