ASTROSAT CZTI

Data Quality Report

Orbit 13426

Creation date: 2024-06-27T16:40:37.330656
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/AS1A04_103T01_9000001988_13426cztM0_level2.evt modeM0/AS1A04_103T01_9000001988_13426cztM0_level2_quad_clean.evt
Size (bytes)536,820,48075,758,400
Size512.0 MB 72.2 MB
Events in quadrant A2,974,457485,671
Events in quadrant B3,097,509497,565
Events in quadrant C2,991,844485,012
Events in quadrant D6,754,502374,083

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131352
B0133951
C0131811
D0242761

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6466510.788741%
B6466801.237241%
C6466530.819672%
D6466148422.950820%

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 7272 6467 0 0 0.00% 0.00%
B 7272 6467 15 15 0.21% 0.23%
C 7272 6467 7 7 0.10% 0.11%
D 7271 6466 1426 1426 19.61% 22.05%

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 1 162 22531 139.64 763 745 156.0
A 1 178 7083 40.62 763 745 156.0
A 0 226 6791 38.75 763 745 156.0
B 4 142 95436 646.14 762 742 146.6
B 12 111 17273 112.8 762 742 146.6
B 11 111 14819 96.05 762 742 146.6
C 14 234 30739 173.18 746 749 173.2
C 3 233 26270 147.37 746 749 173.2
C 8 128 11271 60.76 746 749 173.2
D 1 52 3971599 26680.86 612 595 148.8
D 13 249 202265 1355.0 612 595 148.8
D 8 195 199975 1339.62 612 595 148.8

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