ASTROSAT CZTI

Data Quality Report

Orbit 19999

Creation date: 2024-06-27T18:09:53.708330
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/AS1A06_002T02_9000002982_19999cztM0_level2.evt modeM0/AS1A06_002T02_9000002982_19999cztM0_level2_quad_clean.evt
Size (bytes)480,654,72082,762,560
Size458.4 MB 78.9 MB
Events in quadrant A3,609,622524,692
Events in quadrant B3,235,867532,877
Events in quadrant C3,357,217504,551
Events in quadrant D3,919,486497,641

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146641
B0134551
C0139121
D0158231

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64051402.185792%
B6405400.624512%
C6405691.077283%
D64052553.981265%

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 7475 6406 90 90 1.20% 1.40%
B 7475 6406 8 8 0.11% 0.12%
C 7475 6406 9 9 0.12% 0.14%
D 7475 6406 169 169 2.26% 2.64%

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 14 238 311308 1989.05 786 772 156.1
A 13 252 136115 866.9 786 772 156.1
A 5 16 72659 460.45 786 772 156.1
B 7 220 45254 296.78 780 759 149.9
B 0 214 31372 204.18 780 759 149.9
B 0 245 26237 169.93 780 759 149.9
C 3 233 145394 835.19 744 749 173.2
C 14 238 117465 673.93 744 749 173.2
C 0 207 111540 639.72 744 749 173.2
D 12 218 404918 2233.67 749 727 181.0
D 1 52 390074 2151.64 749 727 181.0
D 7 238 184972 1018.19 749 727 181.0

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