ASTROSAT CZTI

Data Quality Report

Orbit 21083

Creation date: 2024-06-27T18:23:16.201113
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_075T05_9000003116_21083cztM0_level2.evt modeM0/AS1A05_075T05_9000003116_21083cztM0_level2_quad_clean.evt
Size (bytes)1,390,662,720238,930,560
Size1.3 GB 227.9 MB
Events in quadrant A8,392,2241,556,812
Events in quadrant B9,467,0151,548,444
Events in quadrant C8,575,8671,490,656
Events in quadrant D14,465,7741,399,753

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03660
B03660
C03660
D03660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370403
B0400893
C0373603
D0552553

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A180011760.977723%
B180022941.633152%
C180022271.260971%
D1800212266.810354%

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 19876 18004 6 6 0.03% 0.03%
B 19877 18005 54 54 0.27% 0.30%
C 19877 18005 2 2 0.01% 0.01%
D 19877 18004 856 856 4.31% 4.75%

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 5 16 71431 161.68 2134 2083 428.9
A 15 192 55869 125.4 2134 2083 428.9
A 13 254 28918 62.57 2134 2083 428.9
B 7 220 606246 1500.46 2123 2070 402.7
B 0 219 211441 519.97 2123 2070 402.7
B 0 190 89722 217.68 2123 2070 402.7
C 14 238 317215 659.51 2046 2059 477.9
C 9 54 282387 586.63 2046 2059 477.9
C 13 61 14099 25.19 2046 2059 477.9
D 1 239 4052076 8340.74 2018 1962 485.6
D 1 52 1258402 2587.49 2018 1962 485.6
D 7 238 624944 1282.96 2018 1962 485.6

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