ASTROSAT CZTI

Data Quality Report

Orbit 19353

Creation date: 2024-06-27T18:01:43.973491
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/AS1A05_204T01_9000002856_19353cztM0_level2.evt modeM0/AS1A05_204T01_9000002856_19353cztM0_level2_quad_clean.evt
Size (bytes)504,109,440118,272,960
Size480.8 MB 112.8 MB
Events in quadrant A3,399,139810,006
Events in quadrant B3,491,227810,603
Events in quadrant C3,415,258770,947
Events in quadrant D4,524,829741,912

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141682
B0144566
C0141272
D0178572

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64251342.085603%
B64241392.163761%
C64241632.537360%
D64244376.802615%

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 7710 6425 0 0 0.00% 0.00%
B 7709 6424 13 13 0.17% 0.20%
C 7709 6424 3 3 0.04% 0.05%
D 7709 6424 262 262 3.40% 4.08%

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 8 205 8173 41.8 879 864 174.9
A 13 254 7881 40.13 879 864 174.9
A 0 226 7806 39.7 879 864 174.9
B 0 229 45939 282.11 858 839 159.9
B 3 64 33774 206.01 858 839 159.9
B 0 190 21241 127.62 858 839 159.9
C 14 238 132577 680.83 836 846 193.5
C 9 54 13664 66.25 836 846 193.5
C 3 233 9968 47.15 836 846 193.5
D 10 66 673744 3298.54 845 824 204.0
D 7 238 447723 2190.62 845 824 204.0
D 11 176 89539 434.87 845 824 204.0

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