ASTROSAT CZTI

Data Quality Report

Orbit 43745

Creation date: 2024-06-27T22:55:17.077224
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/AS1A13_003T01_9000005902_43745cztM0_level2.fits modeM0/AS1A13_003T01_9000005902_43745cztM0_level2_quad_clean.evt
Size (bytes)528,010,560112,628,160
Size503.6 MB 107.4 MB
Events in quadrant A4,510,341759,129
Events in quadrant B3,791,098779,307
Events in quadrant C4,819,323735,193
Events in quadrant D5,880,888649,109

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179582
B0160152
C0191732
D0223632

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70041692.412907%
B70042353.355226%
C70044095.839520%
D70045888.395203%

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 8849 7006 29 29 0.33% 0.41%
B 8849 7006 65 65 0.73% 0.93%
C 8849 7006 342 342 3.86% 4.88%
D 8849 7006 429 429 4.85% 6.12%

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 10 83 987741 5922.66 802 786 166.6
A 13 248 158767 948.03 802 786 166.6
A 14 63 103179 614.45 802 786 166.6
B 5 235 304837 1944.29 799 774 156.4
B 4 171 149580 951.52 799 774 156.4
B 4 80 103973 659.89 799 774 156.4
C 14 254 1033790 5559.93 784 789 185.8
C 15 158 349951 1879.3 784 789 185.8
C 3 233 135907 727.25 784 789 185.8
D 15 0 518919 2698.58 757 736 192.0
D 1 52 419005 2178.25 757 736 192.0
D 1 47 350626 1822.15 757 736 192.0

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