ASTROSAT CZTI

Data Quality Report

Orbit 44150

Creation date: 2024-06-27T22:59:46.717226
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_012T02_9000005950_44150cztM0_level2.fits modeM0/AS1A13_012T02_9000005950_44150cztM0_level2_quad_clean.evt
Size (bytes)743,947,200174,723,840
Size709.5 MB 166.6 MB
Events in quadrant A7,488,2471,165,758
Events in quadrant B5,958,5301,179,528
Events in quadrant C5,381,6861,152,417
Events in quadrant D7,844,5181,020,147

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02220
B02220
C02220
D02220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0301941
B0254991
C0241801
D0314361

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A111661961.755329%
B111674223.778992%
C11167830.743261%
D111675905.283424%

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 11181 11167 35 35 0.31% 0.31%
B 11182 11168 174 174 1.56% 1.56%
C 11182 11168 20 20 0.18% 0.18%
D 11182 11168 427 427 3.82% 3.82%

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 10 83 1878762 7180.85 1247 1221 261.5
A 15 223 774250 2956.53 1247 1221 261.5
A 3 137 14382 50.34 1247 1221 261.5
B 5 172 777373 3162.46 1229 1188 245.4
B 0 189 249412 1011.35 1229 1188 245.4
B 4 173 50068 199.15 1229 1188 245.4
C 14 254 239049 828.54 1217 1223 287.0
C 12 16 202566 701.44 1217 1223 287.0
C 15 158 86428 296.84 1217 1223 287.0
D 13 171 992696 3229.79 1198 1157 307.0
D 4 235 377827 1226.95 1198 1157 307.0
D 1 52 361269 1173.01 1198 1157 307.0

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