ASTROSAT CZTI

Data Quality Report

Orbit 33815

Creation date: 2024-06-27T20:53:00.157318
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/AS1A11_106T03_9000004826_33815cztM0_level2.evt modeM0/AS1A11_106T03_9000004826_33815cztM0_level2_quad_clean.evt
Size (bytes)160,064,64020,208,960
Size152.6 MB 19.3 MB
Events in quadrant A806,693125,461
Events in quadrant B999,852126,488
Events in quadrant C1,060,387127,333
Events in quadrant D1,872,525116,885

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A032741
B039770
C041900
D066820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A156220.128041%
B1562402.560819%
C1562664.225352%
D156218311.715749%

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 3715 1563 0 0 0.00% 0.00%
B 3715 1563 14 14 0.38% 0.90%
C 3715 1563 48 48 1.29% 3.07%
D 3715 1563 105 105 2.83% 6.72%

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 13 6 6051 136.18 205 200 43.0
A 10 83 5107 114.2 205 200 43.0
A 15 169 3233 70.59 205 200 43.0
B 5 172 80262 1999.3 202 198 40.0
B 0 213 34759 863.03 202 198 40.0
B 0 229 22118 547.37 202 198 40.0
C 0 10 177957 3854.38 196 198 46.1
C 15 214 60747 1312.89 196 198 46.1
C 3 233 19546 419.53 196 198 46.1
D 8 195 338369 6420.14 193 189 52.7
D 12 235 240820 4568.23 193 189 52.7
D 2 152 207557 3936.75 193 189 52.7

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