ASTROSAT CZTI

Data Quality Report

Orbit 22817

Creation date: 2024-06-27T18:46:11.760780
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/AS1C05_012T02_9000003372_22817cztM0_level2.evt modeM0/AS1C05_012T02_9000003372_22817cztM0_level2_quad_clean.evt
Size (bytes)533,306,880115,937,280
Size508.6 MB 110.6 MB
Events in quadrant A3,439,159769,565
Events in quadrant B3,521,609774,036
Events in quadrant C3,564,708731,242
Events in quadrant D5,117,672715,462

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151741
B0153391
C0152131
D0202231

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7484330.440941%
B7485470.627923%
C7485941.255845%
D74853744.996660%

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 7794 7485 0 0 0.00% 0.00%
B 7795 7486 2 2 0.03% 0.03%
C 7795 7486 0 0 0.00% 0.00%
D 7795 7486 218 218 2.80% 2.91%

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 13 254 12826 66.81 891 875 178.9
A 0 226 7762 38.5 891 875 178.9
A 3 137 7580 37.48 891 875 178.9
B 0 190 25584 146.51 882 860 168.8
B 12 111 20261 114.96 882 860 168.8
B 0 229 19357 109.61 882 860 168.8
C 14 238 135731 691.18 848 852 195.1
C 0 239 121005 615.72 848 852 195.1
C 13 61 5990 26.33 848 852 195.1
D 7 238 1187328 5730.1 857 829 207.1
D 1 52 298695 1438.52 857 829 207.1
D 2 136 185355 891.15 857 829 207.1

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