ASTROSAT CZTI

Data Quality Report

Orbit 16378

Creation date: 2024-06-27T17:21:48.473309
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/AS1A05_069T04_9000002418_16378cztM0_level2.evt modeM0/AS1A05_069T04_9000002418_16378cztM0_level2_quad_clean.evt
Size (bytes)589,429,44095,019,840
Size562.1 MB 90.6 MB
Events in quadrant A4,607,139589,348
Events in quadrant B4,484,885601,121
Events in quadrant C4,353,401590,876
Events in quadrant D3,902,235580,044

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0253806756
B0235805611
C0231105263
D0221745298

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104
B0105
C0116
D0105

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020557
B020650
C019846
D020357

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74083905.264579%
B73652713.679566%
C74263474.672771%
D7431981.318800%

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 11348 7755 334 334 2.94% 4.31%
B 11354 7702 150 150 1.32% 1.95%
C 11359 7736 80 80 0.70% 1.03%
D 11352 7770 47 47 0.41% 0.60%

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 1239437 7101.62 864 843 174.4
A 15 223 26288 145.89 864 843 174.4
A 9 143 18538 101.45 864 843 174.4
B 10 16 673647 4033.64 864 843 166.8
B 15 35 94579 561.97 864 843 166.8
B 0 197 64783 383.34 864 843 166.8
C 3 233 978324 5030.53 831 835 194.3
C 14 238 126183 645.09 831 835 194.3
C 13 61 6155 27.38 831 835 194.3
D 12 110 379054 1802.78 854 827 209.8
D 12 218 174713 828.81 854 827 209.8
D 1 52 55954 262.76 854 827 209.8

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