ASTROSAT CZTI

Data Quality Report

Orbit 18412

Creation date: 2024-06-27T17:49:26.548249
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_227T06_9000002730_18412cztM0_level2.evt modeM0/AS1A05_227T06_9000002730_18412cztM0_level2_quad_clean.evt
Size (bytes)491,567,04056,952,000
Size468.8 MB 54.3 MB
Events in quadrant A2,982,301336,188
Events in quadrant B4,236,325338,970
Events in quadrant C2,994,282323,530
Events in quadrant D4,271,844310,948

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123691
B0165461
C0123461
D0166151

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5940450.757576%
B59412444.107053%
C5941691.161421%
D59412674.494193%

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 7251 5941 1 1 0.01% 0.02%
B 7252 5942 116 116 1.60% 1.95%
C 7252 5942 0 0 0.00% 0.00%
D 7252 5942 204 204 2.81% 3.43%

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 15 174 23335 146.16 768 754 154.5
A 0 226 6564 37.61 768 754 154.5
A 3 137 5523 30.87 768 754 154.5
B 10 245 1156232 8056.19 764 748 143.4
B 7 220 42666 292.26 764 748 143.4
B 0 244 19446 130.36 764 748 143.4
C 14 238 115314 671.79 733 739 170.6
C 3 233 18791 105.85 733 739 170.6
C 13 61 5216 26.25 733 739 170.6
D 1 52 1177462 6663.64 725 705 176.6
D 8 230 256768 1450.01 725 705 176.6
D 13 168 25097 138.12 725 705 176.6

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