ASTROSAT CZTI

Data Quality Report

Orbit 48484

Creation date: 2024-09-16T10:38:43.054006
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_081T01_9000006428_48484cztM0_level2.fits modeM0/AS1A13_081T01_9000006428_48484cztM0_level2_quad_clean.evt
Size (bytes)798,819,840174,571,200
Size761.8 MB 166.5 MB
Events in quadrant A11,281,0881,160,552
Events in quadrant B6,424,6611,150,130
Events in quadrant C4,742,0001,144,229
Events in quadrant D6,243,2651,044,809

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0417392
B0274310
C0232630
D0271540

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02280
B02280
C02280
D02280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A113512482.184830%
B113525284.651163%
C11352300.264271%
D113522412.122974%

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 11351 11351 2 2 0.02% 0.02%
B 11352 11352 382 382 3.37% 3.37%
C 11352 11352 2 2 0.02% 0.02%
D 11352 11352 232 232 2.04% 2.04%

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 6550138 26261.11 1194 1168 249.4
A 0 247 49099 192.2 1194 1168 249.4
A 12 189 42938 167.5 1194 1168 249.4
B 0 186 867424 3775.81 1176 1141 229.4
B 12 18 356392 1548.41 1176 1141 229.4
B 12 16 321832 1397.77 1176 1141 229.4
C 0 207 29882 103.48 1180 1186 277.3
C 3 233 26512 91.32 1180 1186 277.3
C 14 254 20445 69.45 1180 1186 277.3
D 2 249 904935 3074.36 1172 1134 294.0
D 12 233 360288 1221.7 1172 1134 294.0
D 13 84 262458 888.92 1172 1134 294.0

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