ASTROSAT CZTI

Data Quality Report

Orbit 30655

Creation date: 2024-06-27T20:18:12.394633
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/AS1C05_007T01_9000004418_30655cztM0_level2.evt modeM0/AS1C05_007T01_9000004418_30655cztM0_level2_quad_clean.evt
Size (bytes)690,575,04077,722,560
Size658.6 MB 74.1 MB
Events in quadrant A3,235,139501,329
Events in quadrant B5,067,101501,579
Events in quadrant C3,377,445469,971
Events in quadrant D8,801,946432,594

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134411
B0194702
C0137991
D0307001

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6419280.436205%
B6418540.841384%
C6418981.526955%
D641892514.412590%

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 7549 6420 0 0 0.00% 0.00%
B 7548 6419 2 2 0.03% 0.03%
C 7548 6419 13 13 0.17% 0.20%
D 7548 6419 1196 1196 15.85% 18.63%

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 0 13 19127 110.28 829 814 166.1
A 8 192 16282 93.15 829 814 166.1
A 13 254 12345 69.44 829 814 166.1
B 6 159 1798021 11548.45 820 800 155.6
B 12 111 19300 118.88 820 800 155.6
B 11 111 17649 108.27 820 800 155.6
C 14 238 128045 701.46 781 787 181.4
C 0 10 100507 549.67 781 787 181.4
C 3 233 91485 499.94 781 787 181.4
D 8 195 4889067 24759.9 754 741 197.4
D 12 227 772924 3911.19 754 741 197.4
D 13 249 115242 579.96 754 741 197.4

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