ASTROSAT CZTI

Data Quality Report

Orbit 00976

Creation date: 2024-06-27T14:05:35.989357
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/AS1P01_998T01_9000000188_00976cztM0_level2.evt modeM0/AS1P01_998T01_9000000188_00976cztM0_level2_quad_clean.evt
Size (bytes)1,145,586,240107,182,080
Size1.1 GB 102.2 MB
Events in quadrant A8,464,525695,155
Events in quadrant B9,185,264691,865
Events in quadrant C8,650,318683,759
Events in quadrant D7,911,796669,028

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0303210
B0323980
C0308710
D0287140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A727120.027507%
B7271340.467611%
C7271170.233806%
D7272901.237624%

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 7676 7272 180 180 2.34% 2.48%
B 7676 7272 314 314 4.09% 4.32%
C 7676 7272 175 175 2.28% 2.41%
D 7677 7273 188 188 2.45% 2.58%

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 14 170 132347 251.07 2165 2186 518.4
A 11 79 11997 18.92 2165 2186 518.4
A 12 189 10813 16.64 2165 2186 518.4
B 5 249 170261 311.83 2279 2291 538.7
B 0 220 113770 206.95 2279 2291 538.7
B 15 22 84869 153.3 2279 2291 538.7
C 15 241 351729 603.6 2083 2154 579.1
C 3 111 31389 50.48 2083 2154 579.1
C 3 79 30101 48.25 2083 2154 579.1
D 2 63 269080 438.39 1967 2038 609.1
D 1 4 182536 296.32 1967 2038 609.1
D 13 169 21078 31.26 1967 2038 609.1

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