ASTROSAT CZTI

Data Quality Report

Orbit 28263

Creation date: 2024-06-27T19:49:47.456226
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/AS1A10_067T01_9000004076_28263cztM0_level2.evt modeM0/AS1A10_067T01_9000004076_28263cztM0_level2_quad_clean.evt
Size (bytes)1,264,982,400192,381,120
Size1.2 GB 183.5 MB
Events in quadrant A7,167,5031,236,620
Events in quadrant B8,320,6381,219,547
Events in quadrant C7,710,7241,175,207
Events in quadrant D14,085,8391,146,874

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0311010
B0345130
C0324840
D0522870

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A151801350.889328%
B151814062.674396%
C151812861.883934%
D15181170111.204795%

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 16990 15181 0 0 0.00% 0.00%
B 16991 15182 146 146 0.86% 0.96%
C 16991 15181 12 12 0.07% 0.08%
D 16991 15181 1420 1420 8.36% 9.35%

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 13 254 24174 59.99 1853 1816 372.7
A 3 137 18745 45.42 1853 1816 372.7
A 0 226 15853 37.66 1853 1816 372.7
B 10 245 434847 1231.87 1822 1776 351.6
B 10 246 360202 1019.54 1822 1776 351.6
B 15 222 156137 439.08 1822 1776 351.6
C 3 233 526967 1264.64 1768 1780 415.3
C 14 238 281728 674.11 1768 1780 415.3
C 13 61 12173 25.02 1768 1780 415.3
D 1 52 5209527 12539.91 1728 1682 415.3
D 8 195 1627280 3914.26 1728 1682 415.3
D 2 250 308989 739.96 1728 1682 415.3

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