ASTROSAT CZTI

Data Quality Report

Orbit 16115

Creation date: 2024-06-27T17:18:13.078218
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/AS1T02_094T01_9000002380_16115cztM0_level2.evt modeM0/AS1T02_094T01_9000002380_16115cztM0_level2_quad_clean.evt
Size (bytes)615,427,20097,744,320
Size586.9 MB 93.2 MB
Events in quadrant A3,720,798632,941
Events in quadrant B4,173,061631,083
Events in quadrant C3,749,469609,524
Events in quadrant D6,472,820550,394

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163193
B0174802
C0161222
D0245412

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7702770.999740%
B77021351.752791%
C77021071.389250%
D770284610.984160%

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 8438 7704 20 20 0.24% 0.26%
B 8438 7704 14 14 0.17% 0.18%
C 8438 7704 4 4 0.05% 0.05%
D 8438 7704 765 765 9.07% 9.93%

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 15 174 136352 721.58 924 906 187.7
A 8 247 25642 131.78 924 906 187.7
A 0 226 8164 38.67 924 906 187.7
B 0 189 276993 1566.34 923 900 176.3
B 7 220 141538 797.87 923 900 176.3
B 0 229 44074 244.94 923 900 176.3
C 14 238 136748 647.54 890 894 209.8
C 9 236 98156 463.59 890 894 209.8
C 3 233 30151 139.45 890 894 209.8
D 1 52 1675199 8007.28 853 828 209.1
D 7 38 1002546 4790.48 853 828 209.1
D 5 222 375835 1793.38 853 828 209.1

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