ASTROSAT CZTI

Data Quality Report

Orbit 28200

Creation date: 2024-06-27T19:49:05.872125
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/AS1A10_045T09_9000004072_28200cztM0_level2.evt modeM0/AS1A10_045T09_9000004072_28200cztM0_level2_quad_clean.evt
Size (bytes)491,195,52083,943,360
Size468.4 MB 80.1 MB
Events in quadrant A3,000,264535,758
Events in quadrant B3,034,591548,285
Events in quadrant C3,376,014516,413
Events in quadrant D5,033,302497,973

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130970
B0131660
C0140250
D0193550

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6353751.180545%
B63531021.605541%
C63541602.518099%
D63543495.492603%

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 7003 6354 0 0 0.00% 0.00%
B 7003 6353 2 2 0.03% 0.03%
C 7004 6355 35 35 0.50% 0.55%
D 7004 6355 294 294 4.20% 4.63%

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 13 254 8761 50.8 773 757 157.6
A 3 137 7591 43.37 773 757 157.6
A 6 16 6663 37.48 773 757 157.6
B 12 111 18725 120.36 766 747 149.4
B 11 111 17229 110.35 766 747 149.4
B 14 111 16281 104.0 766 747 149.4
C 15 208 207622 1187.86 735 740 174.2
C 3 233 158171 903.93 735 740 174.2
C 14 238 118313 675.07 735 740 174.2
D 1 52 1883490 10722.06 733 714 175.6
D 8 195 204423 1160.08 733 714 175.6
D 5 222 94587 534.59 733 714 175.6

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