ASTROSAT CZTI

Data Quality Report

Orbit 43830

Creation date: 2024-06-27T22:56:18.385239
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/AS1A13_018T01_9000005906_43830cztM0_level2.fits modeM0/AS1A13_018T01_9000005906_43830cztM0_level2_quad_clean.evt
Size (bytes)2,021,137,920295,024,320
Size1.9 GB 281.4 MB
Events in quadrant A17,931,1781,953,158
Events in quadrant B12,742,9942,123,240
Events in quadrant C22,226,6801,911,930
Events in quadrant D20,410,7301,595,895

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0672272
B0510642
C0798593
D0741792

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03960
B03960
C03960
D03960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1954917008.696097%
B195508154.168798%
C19549243712.466111%
D19549336017.187580%

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 20589 19551 1252 1252 6.08% 6.40%
B 20590 19552 417 417 2.03% 2.13%
C 20589 19549 1905 1905 9.25% 9.74%
D 20589 19551 3010 3010 14.62% 15.40%

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 15 223 6057644 13509.4 2167 2120 448.2
A 10 83 2705204 6030.37 2167 2120 448.2
A 0 175 238306 526.91 2167 2120 448.2
B 5 235 2334948 5399.92 2210 2145 432.0
B 5 172 624162 1439.83 2210 2145 432.0
B 4 170 215854 494.69 2210 2145 432.0
C 3 233 10562544 21433.39 2102 2110 492.7
C 15 158 2950547 5984.13 2102 2110 492.7
C 15 174 146422 292.89 2102 2110 492.7
D 5 235 4917721 9411.27 2036 1972 522.3
D 1 52 2963752 5670.37 2036 1972 522.3
D 12 33 877408 1676.03 2036 1972 522.3

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