ASTROSAT CZTI

Data Quality Report

Orbit 26072

Creation date: 2024-06-27T19:24:30.318865
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/AS1A09_142T01_9000003766_26072cztM0_level2.evt modeM0/AS1A09_142T01_9000003766_26072cztM0_level2_quad_clean.evt
Size (bytes)137,044,80037,304,640
Size130.7 MB 35.6 MB
Events in quadrant A866,294258,646
Events in quadrant B948,730255,019
Events in quadrant C872,164242,457
Events in quadrant D1,331,856234,972

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A038000
B040680
C038140
D051700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A189300.000000%
B1894180.950370%
C189450.263992%
D18941387.286167%

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 1893 1893 0 0 0.00% 0.00%
B 1894 1894 11 11 0.58% 0.58%
C 1894 1894 1 1 0.05% 0.05%
D 1894 1894 135 135 7.13% 7.13%

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 6 16 4529 93.16 222 218 46.3
A 13 254 3902 79.61 222 218 46.3
A 0 13 2131 41.34 222 218 46.3
B 5 172 85972 2052.67 216 211 41.8
B 0 190 20040 474.6 216 211 41.8
B 12 111 4308 98.06 216 211 41.8
C 14 238 34040 670.27 212 212 50.5
C 13 250 3907 73.21 212 212 50.5
C 14 225 3837 71.83 212 212 50.5
D 12 233 407409 7149.33 212 206 57.0
D 1 52 77061 1349.35 212 206 57.0
D 8 195 26850 467.78 212 206 57.0

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