ASTROSAT CZTI

Data Quality Report

Orbit 16151

Creation date: 2024-06-27T17:18:40.838312
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/AS1T02_109T01_9000002386_16151cztM0_level2.evt modeM0/AS1T02_109T01_9000002386_16151cztM0_level2_quad_clean.evt
Size (bytes)505,252,80073,180,800
Size481.8 MB 69.8 MB
Events in quadrant A3,946,069455,842
Events in quadrant B3,250,831468,438
Events in quadrant C3,196,812445,067
Events in quadrant D4,502,141428,522

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156332
B0132291
C0130871
D0172411

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59881642.738811%
B5988550.918504%
C5988350.584502%
D59883535.895124%

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 7184 5990 106 106 1.48% 1.77%
B 7184 5990 11 11 0.15% 0.18%
C 7184 5990 0 0 0.00% 0.00%
D 7184 5990 307 307 4.27% 5.13%

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 0 253 537615 3530.08 759 745 152.1
A 15 174 481303 3159.81 759 745 152.1
A 0 226 6850 40.14 759 745 152.1
B 5 65 149705 1027.02 758 742 145.0
B 0 229 54285 369.15 758 742 145.0
B 4 216 24890 166.49 758 742 145.0
C 3 233 249332 1483.14 721 729 167.6
C 14 238 110968 657.67 721 729 167.6
C 0 207 15183 86.23 721 729 167.6
D 1 52 1434533 8091.65 727 705 177.2
D 7 38 253951 1429.16 727 705 177.2
D 13 172 28866 158.92 727 705 177.2

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