ASTROSAT CZTI

Data Quality Report

Orbit 15844

Creation date: 2024-06-27T17:14:15.669993
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/AS1A04_143T01_9000002344_15844cztM0_level2.evt modeM0/AS1A04_143T01_9000002344_15844cztM0_level2_quad_clean.evt
Size (bytes)1,463,215,680228,337,920
Size1.4 GB 217.8 MB
Events in quadrant A12,505,0191,348,277
Events in quadrant B10,417,4631,425,069
Events in quadrant C10,106,9011,363,704
Events in quadrant D9,879,2511,346,759

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04240
B04240
C04240
D04240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0507937
B0444135
C0431715
D0440175

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2076612786.154291%
B207665952.865261%
C207666092.932678%
D207665412.605220%

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 38073 20772 582 582 1.53% 2.80%
B 38073 20773 10 10 0.03% 0.05%
C 38073 20772 2 2 0.01% 0.01%
D 38073 20772 60 60 0.16% 0.29%

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 15 239 2726417 5392.53 2500 2442 505.1
A 9 143 67262 128.32 2500 2442 505.1
A 15 157 50665 95.46 2500 2442 505.1
B 4 216 162227 328.54 2535 2470 486.3
B 3 209 91548 183.19 2535 2470 486.3
B 4 173 80655 160.79 2535 2470 486.3
C 14 238 371139 643.84 2438 2448 572.6
C 7 247 141435 242.71 2438 2448 572.6
C 3 233 47043 77.88 2438 2448 572.6
D 1 52 319094 524.17 2487 2416 604.1
D 2 234 87225 140.38 2487 2416 604.1
D 10 70 35008 53.95 2487 2416 604.1

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