ASTROSAT CZTI

Data Quality Report

Orbit 20220313_A11_065T05_9000004998_level2

Creation date: 2022-03-14T17:53:15.182492
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/AS1A11_065T05_9000004998cztM0_level2_bc.evt modeM0/AS1A11_065T05_9000004998cztM0_level2_quad_clean.evt
Size (bytes)1,089,391,680295,776,000
Size1.0 GB 282.1 MB
Events in quadrant A4,933,2061,878,473
Events in quadrant B6,757,4301,902,180
Events in quadrant C6,129,4401,855,123
Events in quadrant D13,548,7771,684,982

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0800
D0800

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04860
B04860
C04860
D04860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0483100
B0562490
C0500200
D0763620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A23796290.121869%
B237965432.281896%
C237961500.630358%
D2379612285.160531%

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 31834 23801 1 1 0.00% 0.00%
B 31834 23796 27 27 0.08% 0.11%
C 31834 23796 31 31 0.10% 0.13%
D 31834 23796 359 359 1.13% 1.51%

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 172289 641.03 1195 1171 266.9
A 13 6 46823 171.02 1195 1171 266.9
A 13 254 39032 141.83 1195 1171 266.9
B 5 200 699810 2925.32 1204 1179 238.8
B 5 172 645472 2697.79 1204 1179 238.8
B 0 190 271863 1133.41 1204 1179 238.8
C 15 214 1013624 3717.76 1177 1168 272.3
C 0 10 291266 1065.24 1177 1168 272.3
C 14 67 87327 316.38 1177 1168 272.3
D 8 195 3912224 14291.53 1152 1112 273.7
D 12 227 1237452 4517.69 1152 1112 273.7
D 1 52 1097340 4005.71 1152 1112 273.7

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