ASTROSAT CZTI

Data Quality Report

Orbit 24228

Creation date: 2024-06-27T19:03:43.628784
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/AS1A07_118T01_9000003586_24228cztM0_level2.evt modeM0/AS1A07_118T01_9000003586_24228cztM0_level2_quad_clean.evt
Size (bytes)498,381,120100,664,640
Size475.3 MB 96.0 MB
Events in quadrant A3,252,483659,448
Events in quadrant B3,437,825679,009
Events in quadrant C3,550,290647,125
Events in quadrant D4,419,074616,920

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138232
B0143632
C0144502
D0172882

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6394380.594307%
B63941061.657804%
C6394991.548327%
D63942393.737879%

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 7609 6394 0 0 0.00% 0.00%
B 7609 6394 28 28 0.37% 0.44%
C 7609 6395 2 2 0.03% 0.03%
D 7609 6395 180 180 2.37% 2.81%

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 3 1 16315 92.91 836 822 166.8
A 6 16 15246 86.49 836 822 166.8
A 13 254 11770 65.65 836 822 166.8
B 0 245 99219 617.7 839 820 159.3
B 12 17 39031 239.87 839 820 159.3
B 12 111 18306 109.77 839 820 159.3
C 7 247 155064 812.7 813 818 189.8
C 14 238 132342 692.98 813 818 189.8
C 2 16 92401 482.54 813 818 189.8
D 7 38 587983 3031.72 804 783 193.7
D 8 195 490120 2526.45 804 783 193.7
D 7 238 133051 682.9 804 783 193.7

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