ASTROSAT CZTI

Data Quality Report

Orbit 09537

Creation date: 2024-06-27T15:47:24.852193
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/AS1G07_049T01_9000001352_09537cztM0_level2.evt modeM0/AS1G07_049T01_9000001352_09537cztM0_level2_quad_clean.evt
Size (bytes)688,127,040194,025,600
Size656.2 MB 185.0 MB
Events in quadrant A5,337,7691,312,758
Events in quadrant B4,749,6591,328,555
Events in quadrant C4,597,2401,316,791
Events in quadrant D5,519,4891,268,283

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0241
B0240
C0241
D0242

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0255913519
B0231803072
C0231533038
D0264203816

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022426
B022434
C022436
D022438

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A93481651.765083%
B93731391.482983%
C93991161.234174%
D93211611.727282%

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 13358 10147 3 3 0.02% 0.03%
B 13358 10170 5 5 0.04% 0.05%
C 13358 10203 11 11 0.08% 0.11%
D 13358 10108 55 55 0.41% 0.54%

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 1 162 348929 1486.51 1173 1150 234.0
A 1 178 165765 703.61 1173 1150 234.0
A 1 161 158580 672.9 1173 1150 234.0
B 0 214 124276 572.9 1169 1143 214.9
B 0 219 59831 273.05 1169 1143 214.9
B 12 111 22466 99.21 1169 1143 214.9
C 4 254 151943 587.71 1138 1149 256.6
C 13 61 8975 30.5 1138 1149 256.6
C 14 67 4815 14.29 1138 1149 256.6
D 1 52 959633 3474.15 1129 1106 275.9
D 8 195 78247 279.59 1129 1106 275.9
D 13 137 75750 270.54 1129 1106 275.9

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