ASTROSAT CZTI

Data Quality Report

Orbit 13020

Creation date: 2024-06-27T16:35:08.317123
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_002T01_9000001914_13020cztM0_level2.evt modeM0/AS1T02_002T01_9000001914_13020cztM0_level2_quad_clean.evt
Size (bytes)203,307,84037,696,320
Size193.9 MB 36.0 MB
Events in quadrant A1,025,130275,251
Events in quadrant B2,811,554177,977
Events in quadrant C1,050,728265,323
Events in quadrant D1,112,114257,415

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A046160
B098590
C048110
D048630

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A228920.087374%
B228999943.643512%
C228960.262123%
D228980.349498%

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 2290 2290 0 0 0.00% 0.00%
B 2289 2289 593 593 25.91% 25.91%
C 2290 2290 5 5 0.22% 0.22%
D 2290 2290 4 4 0.17% 0.17%

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 12 189 19208 355.27 256 250 53.4
A 1 162 6612 119.22 256 250 53.4
A 15 223 3815 66.81 256 250 53.4
B 4 239 2044544 59539.97 171 167 34.3
B 3 64 35843 1039.02 171 167 34.3
B 3 209 24046 695.45 171 167 34.3
C 0 207 90666 1562.89 245 246 57.9
C 14 234 3931 63.69 245 246 57.9
C 13 61 1743 25.88 245 246 57.9
D 1 52 133108 2219.92 248 241 59.9
D 8 195 20829 343.98 248 241 59.9
D 2 234 9124 148.42 248 241 59.9

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