ASTROSAT CZTI

Data Quality Report

Orbit 35103

Creation date: 2024-06-27T21:09:20.548231
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/AS1T05_015T01_9000005026_35103cztM0_level2.evt modeM0/AS1T05_015T01_9000005026_35103cztM0_level2_quad_clean.evt
Size (bytes)580,158,72067,648,320
Size553.3 MB 64.5 MB
Events in quadrant A2,744,788435,021
Events in quadrant B3,028,976438,023
Events in quadrant C3,522,060438,411
Events in quadrant D7,933,064382,346

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112583
B0121842
C0136292
D0270922

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5057130.257069%
B5057541.067827%
C50572595.121614%
D5057110321.811351%

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 7178 5058 1 1 0.01% 0.02%
B 7178 5058 31 31 0.43% 0.61%
C 7178 5058 207 207 2.88% 4.09%
D 7178 5058 1074 1074 14.96% 21.23%

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 83137 611.32 683 672 134.9
A 13 6 13726 96.77 683 672 134.9
A 13 254 9259 63.66 683 672 134.9
B 5 172 190235 1511.43 676 662 125.4
B 5 255 100680 797.43 676 662 125.4
B 15 85 45221 355.26 676 662 125.4
C 0 10 679978 4559.27 655 661 149.0
C 15 214 206815 1383.61 655 661 149.0
C 12 250 39407 260.05 655 661 149.0
D 8 195 3836124 25902.7 615 600 148.1
D 7 80 605016 4081.84 615 600 148.1
D 10 118 563109 3798.83 615 600 148.1

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