ASTROSAT CZTI

Data Quality Report

Orbit 24888

Creation date: 2024-06-27T19:11:04.523043
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/AS1A08_003T09_9000003644_24888cztM0_level2.evt modeM0/AS1A08_003T09_9000003644_24888cztM0_level2_quad_clean.evt
Size (bytes)529,994,88096,822,720
Size505.4 MB 92.3 MB
Events in quadrant A3,986,102618,187
Events in quadrant B3,377,322632,972
Events in quadrant C3,374,233604,763
Events in quadrant D4,842,285592,568

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163441
B0143681
C0142711
D0192341

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69462733.930320%
B6947991.425076%
C69471251.799338%
D6947961.381891%

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 7321 6947 120 120 1.64% 1.73%
B 7322 6948 0 0 0.00% 0.00%
C 7322 6948 0 0 0.00% 0.00%
D 7322 6948 19 19 0.26% 0.27%

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 6 16 698714 4028.86 848 829 173.2
A 13 254 11325 60.59 848 829 173.2
A 4 2 9933 52.56 848 829 173.2
B 12 111 20806 120.36 847 825 166.0
B 11 111 18772 108.1 847 825 166.0
B 14 111 17372 99.67 847 825 166.0
C 14 238 129513 666.05 819 824 193.2
C 7 247 40411 204.89 819 824 193.2
C 13 61 5607 24.76 819 824 193.2
D 8 195 1436840 6972.56 834 809 206.0
D 7 238 135182 652.44 834 809 206.0
D 2 244 72745 349.28 834 809 206.0

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