ASTROSAT CZTI

Data Quality Report

Orbit 21247

Creation date: 2024-06-27T18:25:24.336201
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/AS1A05_037T01_9000003140_21247cztM0_level2.evt modeM0/AS1A05_037T01_9000003140_21247cztM0_level2_quad_clean.evt
Size (bytes)472,872,960103,625,280
Size451.0 MB 98.8 MB
Events in quadrant A2,986,214708,639
Events in quadrant B3,102,254712,329
Events in quadrant C2,921,537677,799
Events in quadrant D4,929,705646,510

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124811
B0128621
C0122401
D0186024

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5614691.229070%
B5615971.727516%
C5615991.763134%
D56143275.824724%

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 6869 5614 0 0 0.00% 0.00%
B 6870 5615 8 8 0.12% 0.14%
C 6870 5615 2 2 0.03% 0.04%
D 6869 5614 228 228 3.32% 4.06%

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 15 236 40632 261.75 761 750 152.4
A 13 254 9163 55.22 761 750 152.4
A 5 168 7352 43.33 761 750 152.4
B 3 64 43855 303.14 749 735 142.2
B 0 245 38110 262.75 749 735 142.2
B 0 197 28539 195.47 749 735 142.2
C 14 238 114512 690.89 714 722 164.7
C 3 233 10164 57.33 714 722 164.7
C 0 207 7641 42.01 714 722 164.7
D 1 239 1169784 6666.14 725 705 175.4
D 1 52 448238 2551.85 725 705 175.4
D 13 104 132421 751.05 725 705 175.4

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