ASTROSAT CZTI

Data Quality Report

Orbit 20220207_A05_103T01_9000004912_level2

Creation date: 2022-02-09T12:32:12.113470
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_103T01_9000004912cztM0_level2_bc.evt modeM0/AS1A05_103T01_9000004912cztM0_level2_quad_clean.evt
Size (bytes)612,008,640191,543,040
Size583.7 MB 182.7 MB
Events in quadrant A2,689,4801,277,938
Events in quadrant B3,609,9101,298,199
Events in quadrant C3,367,6251,298,520
Events in quadrant D8,121,0311,173,111

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0550

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0233170
B0275810
C0251540
D0434600

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02220
B02220
C02220
D02220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10889170.156121%
B108894684.297915%
C108891121.028561%
D10888156714.391991%

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 15043 10890 0 0 0.00% 0.00%
B 15042 10888 10 10 0.07% 0.09%
C 15042 10888 30 30 0.20% 0.28%
D 15042 10888 224 224 1.49% 2.06%

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 10 83 54621 376.69 665 656 143.3
A 13 6 26789 182.41 665 656 143.3
A 15 223 22867 155.03 665 656 143.3
B 5 172 804212 6228.21 663 653 129.0
B 0 190 108455 835.55 663 653 129.0
B 0 229 70206 539.09 663 653 129.0
C 15 214 428368 2905.47 663 664 147.2
C 0 10 209620 1419.48 663 664 147.2
C 14 67 63354 425.86 663 664 147.2
D 8 195 1467499 9238.65 614 602 158.8
D 2 249 1206388 7594.15 614 602 158.8
D 7 80 1120295 7051.92 614 602 158.8

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