ASTROSAT CZTI

Data Quality Report

Orbit 18526

Creation date: 2024-06-27T17:51:00.425309
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_187T03_9000002748_18526cztM0_level2.evt modeM0/AS1A05_187T03_9000002748_18526cztM0_level2_quad_clean.evt
Size (bytes)488,194,560104,771,520
Size465.6 MB 99.9 MB
Events in quadrant A3,404,159705,477
Events in quadrant B3,365,522713,576
Events in quadrant C3,382,220665,863
Events in quadrant D4,205,615648,441

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140891
B0139842
C0140541
D0168311

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6300911.444444%
B6300781.238095%
C63001051.666667%
D63002363.746032%

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 7600 6300 13 13 0.17% 0.21%
B 7600 6300 1 1 0.01% 0.02%
C 7600 6300 3 3 0.04% 0.05%
D 7600 6300 169 169 2.22% 2.68%

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 80677 472.42 845 830 169.0
A 15 192 32402 186.8 845 830 169.0
A 14 111 19382 109.76 845 830 169.0
B 7 220 43930 276.93 835 817 155.7
B 4 171 17860 109.47 835 817 155.7
B 12 111 17611 107.87 835 817 155.7
C 14 238 125245 675.47 798 804 184.2
C 3 233 78788 423.3 798 804 184.2
C 9 54 44567 237.54 798 804 184.2
D 13 168 525479 2686.16 811 791 195.3
D 7 238 472513 2414.99 811 791 195.3
D 1 52 78408 397.36 811 791 195.3

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