ASTROSAT CZTI

Data Quality Report

Orbit 44266

Creation date: 2024-06-27T23:01:32.025289
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_080T06_9000005982_44266cztM0_level2.fits modeM0/AS1A13_080T06_9000005982_44266cztM0_level2_quad_clean.evt
Size (bytes)1,089,685,440170,118,720
Size1.0 GB 162.2 MB
Events in quadrant A17,995,931816,630
Events in quadrant B6,282,1461,253,354
Events in quadrant C5,367,5461,216,810
Events in quadrant D9,781,5401,049,622

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0622062
B0264922
C0247232
D0371122

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02420
B02420
C02420
D02420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11754440037.434065%
B117542832.407691%
C117551691.437686%
D117559407.996597%

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 13254 11755 3680 3680 27.77% 31.31%
B 13254 11756 84 84 0.63% 0.71%
C 13255 11757 43 43 0.32% 0.37%
D 13255 11756 700 700 5.28% 5.95%

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 11102345 50533.44 1063 1037 219.7
A 10 83 2365259 10762.0 1063 1037 219.7
A 7 3 216050 978.74 1063 1037 219.7
B 5 235 152816 604.38 1281 1241 250.8
B 0 190 126362 498.9 1281 1241 250.8
B 4 173 125607 495.89 1281 1241 250.8
C 14 254 337462 1144.31 1261 1267 293.8
C 3 233 33413 109.42 1261 1267 293.8
C 11 16 27090 87.89 1261 1267 293.8
D 1 20 984588 3185.77 1224 1187 308.7
D 1 52 805836 2606.7 1224 1187 308.7
D 2 249 600795 1942.46 1224 1187 308.7

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