ASTROSAT CZTI

Data Quality Report

Orbit 45919

Creation date: 2024-06-27T23:17:42.456849
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_071T03_9000006142_45919cztM0_level2.fits modeM0/AS1A13_071T03_9000006142_45919cztM0_level2_quad_clean.evt
Size (bytes)664,931,52093,816,000
Size634.1 MB 89.5 MB
Events in quadrant A5,658,368662,329
Events in quadrant B8,762,450508,508
Events in quadrant C2,982,177657,244
Events in quadrant D6,723,845572,811

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0211862
B0304241
C0134951
D0244021

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62941953.098189%
B6294200731.887512%
C6294580.921513%
D62955278.371724%

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 7284 6295 56 56 0.77% 0.89%
B 7284 6295 1418 1418 19.47% 22.53%
C 7284 6295 42 42 0.58% 0.67%
D 7285 6295 488 488 6.70% 7.75%

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 2795458 19484.53 684 669 143.4
A 0 247 133119 923.41 684 669 143.4
A 13 248 30672 209.17 684 669 143.4
B 3 112 5614558 45377.5 620 601 123.7
B 10 246 591753 4778.27 620 601 123.7
B 4 158 34784 276.3 620 601 123.7
C 14 254 175514 1091.18 673 675 160.2
C 12 249 126117 782.89 673 675 160.2
C 5 250 41480 254.67 673 675 160.2
D 11 241 1912885 11474.94 655 633 166.6
D 1 52 1498884 8990.63 655 633 166.6
D 13 249 317017 1898.54 655 633 166.6

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