ASTROSAT CZTI

Data Quality Report

Orbit 08858

Creation date: 2024-06-27T15:38:08.756264
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/AS1A03_036T01_9000001230_08858cztM0_level2.evt modeM0/AS1A03_036T01_9000001230_08858cztM0_level2_quad_clean.evt
Size (bytes)490,530,24097,626,240
Size467.8 MB 93.1 MB
Events in quadrant A4,133,437639,990
Events in quadrant B3,579,589638,273
Events in quadrant C2,915,761636,633
Events in quadrant D3,810,918613,594

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162972
B0146841
C0126171
D0152571

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61332794.549160%
B61332243.652372%
C6133390.635904%
D6133971.581608%

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 7448 6134 126 126 1.69% 2.05%
B 7448 6134 150 150 2.01% 2.45%
C 7448 6134 0 0 0.00% 0.00%
D 7448 6134 28 28 0.38% 0.46%

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 8 5 1215592 8097.58 750 734 150.0
A 3 1 17440 111.35 750 734 150.0
A 0 226 7401 44.44 750 734 150.0
B 4 48 465550 3313.96 747 730 140.3
B 0 214 95338 674.51 747 730 140.3
B 0 219 26948 186.92 747 730 140.3
C 14 234 13993 79.14 738 742 167.4
C 9 54 8304 45.16 738 742 167.4
C 12 4 7100 37.97 738 742 167.4
D 8 195 536402 2994.44 742 721 178.9
D 1 52 150256 835.9 742 721 178.9
D 7 71 88736 492.0 742 721 178.9

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