ASTROSAT CZTI

Data Quality Report

Orbit 18615

Creation date: 2024-06-27T17:52:20.025471
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_082T10_9000002774_18615cztM0_level2.evt modeM0/AS1A05_082T10_9000002774_18615cztM0_level2_quad_clean.evt
Size (bytes)482,783,040103,020,480
Size460.4 MB 98.2 MB
Events in quadrant A3,797,015662,812
Events in quadrant B3,360,208693,105
Events in quadrant C3,372,721677,381
Events in quadrant D3,672,870656,519

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153082
B0138992
C0138463
D0152062

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61631312.125588%
B61631221.979555%
C61621682.726388%
D6162991.606621%

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 7458 6164 41 41 0.55% 0.67%
B 7458 6163 1 1 0.01% 0.02%
C 7457 6163 11 11 0.15% 0.18%
D 7457 6163 4 4 0.05% 0.06%

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 13 604391 3615.19 826 809 167.0
A 13 254 10756 59.58 826 809 167.0
A 9 143 8696 47.24 826 809 167.0
B 0 230 38078 236.75 837 817 157.4
B 4 80 20345 124.08 837 817 157.4
B 12 111 18285 110.99 837 817 157.4
C 14 238 128394 672.34 818 826 189.7
C 9 54 48525 251.39 818 826 189.7
C 3 233 6585 30.35 818 826 189.7
D 5 222 332605 1680.26 824 805 197.5
D 1 52 161068 811.58 824 805 197.5
D 7 238 22830 111.54 824 805 197.5

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