ASTROSAT CZTI

Data Quality Report

Orbit 43951

Creation date: 2024-06-27T22:57:34.545166
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_025T01_9000005920_43951cztM0_level2.fits modeM0/AS1A13_025T01_9000005920_43951cztM0_level2_quad_clean.evt
Size (bytes)465,013,440108,843,840
Size443.5 MB 103.8 MB
Events in quadrant A5,361,028729,122
Events in quadrant B3,455,892757,706
Events in quadrant C3,530,585719,201
Events in quadrant D4,371,061644,843

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0204712
B0146212
C0148332
D0174002

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63751302.039216%
B63751111.741176%
C63751372.149020%
D63752503.921569%

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 7560 6376 18 18 0.24% 0.28%
B 7560 6376 33 33 0.44% 0.52%
C 7560 6376 114 114 1.51% 1.79%
D 7560 6376 215 215 2.84% 3.37%

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 1189322 7961.72 724 708 149.3
A 15 222 1051820 7040.69 724 708 149.3
A 14 254 180084 1201.52 724 708 149.3
B 5 172 103761 723.76 729 707 142.4
B 0 200 103042 718.71 729 707 142.4
B 4 158 94788 660.74 729 707 142.4
C 14 254 542210 3223.24 713 717 168.0
C 1 241 74779 440.85 713 717 168.0
C 3 233 74177 437.27 713 717 168.0
D 5 235 490685 2790.22 700 678 175.6
D 1 52 298164 1693.96 700 678 175.6
D 12 17 227473 1291.42 700 678 175.6

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