ASTROSAT CZTI

Data Quality Report

Orbit 42337

Creation date: 2024-06-27T22:39:09.061253
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/AS1C07_001T10_9000005796_42337cztM0_level2.fits modeM0/AS1C07_001T10_9000005796_42337cztM0_level2_quad_clean.evt
Size (bytes)631,382,400179,746,560
Size602.1 MB 171.4 MB
Events in quadrant A5,902,2431,190,325
Events in quadrant B4,996,7661,210,430
Events in quadrant C5,142,2441,186,952
Events in quadrant D6,460,9581,078,721

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0243013
B0229623
C0226183
D0272963

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02320
B02320
C02320
D02320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11202190.169613%
B11203250.223155%
C1120370.062483%
D112032832.526109%

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 15259 11205 5 5 0.03% 0.04%
B 15260 11206 10 10 0.07% 0.09%
C 15260 11206 1 1 0.01% 0.01%
D 15260 11206 233 233 1.53% 2.08%

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 1124461 4551.8 1209 1182 246.8
A 13 248 50308 199.07 1209 1182 246.8
A 2 79 22112 84.81 1209 1182 246.8
B 0 230 96282 413.95 1200 1168 229.8
B 4 141 44145 187.04 1200 1168 229.8
B 5 172 36659 154.46 1200 1168 229.8
C 15 214 473882 1720.72 1184 1188 274.7
C 12 249 29277 102.25 1184 1188 274.7
C 9 54 11529 37.64 1184 1188 274.7
D 1 52 416128 1446.02 1180 1144 287.0
D 12 6 374693 1301.64 1180 1144 287.0
D 5 32 314015 1090.2 1180 1144 287.0

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