ASTROSAT CZTI

Data Quality Report

Orbit 06849

Creation date: 2024-06-27T15:12:26.410882
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/AS1G06_168T13_9000000942_06849cztM0_level2.evt modeM0/AS1G06_168T13_9000000942_06849cztM0_level2_quad_clean.evt
Size (bytes)531,063,36089,072,640
Size506.5 MB 84.9 MB
Events in quadrant A3,758,139543,381
Events in quadrant B3,783,551551,212
Events in quadrant C3,709,988547,685
Events in quadrant D4,319,652530,468

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161593
B0162472
C0161452
D0182052

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75351021.353683%
B75351361.804910%
C7535640.849370%
D75352723.609821%

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 9140 7537 1 1 0.01% 0.01%
B 9140 7537 4 4 0.04% 0.05%
C 9140 7537 4 4 0.04% 0.05%
D 9140 7537 171 171 1.87% 2.27%

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 8 15 102597 537.03 921 900 189.4
A 15 239 85273 445.54 921 900 189.4
A 13 248 17887 89.7 921 900 189.4
B 4 48 47186 256.29 927 903 180.6
B 0 219 37595 203.18 927 903 180.6
B 0 214 22401 119.05 927 903 180.6
C 9 68 75710 356.42 900 905 209.9
C 10 22 49861 233.26 900 905 209.9
C 3 9 26525 122.07 900 905 209.9
D 2 33 683522 3122.71 890 862 218.6
D 14 34 83986 380.24 890 862 218.6
D 8 195 60028 270.64 890 862 218.6

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