ASTROSAT CZTI

Data Quality Report

Orbit 35714

Creation date: 2022-05-09T16:34:44.077591
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/AS1A09_142T05_9000005118_35714cztM0_level2.evt modeM0/AS1A09_142T05_9000005118_35714cztM0_level2_quad_clean.evt
Size (bytes)407,266,56062,259,840
Size388.4 MB 59.4 MB
Events in quadrant A2,473,163387,538
Events in quadrant B2,837,550388,731
Events in quadrant C3,394,092375,620
Events in quadrant D3,268,290361,404

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108573
B0119682
C0134412
D0134492

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A530770.131901%
B5307831.563972%
C53072304.333899%
D53072093.938195%

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 7009 5308 0 0 0.00% 0.00%
B 7009 5308 61 61 0.87% 1.15%
C 7009 5308 218 218 3.11% 4.11%
D 7009 5308 205 205 2.92% 3.86%

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 139259 1139.72 601 589 121.7
A 7 16 7651 58.04 601 589 121.7
A 3 137 6364 47.46 601 589 121.7
B 5 172 374740 3247.01 594 577 115.2
B 5 255 108820 939.34 594 577 115.2
B 12 111 14514 120.95 594 577 115.2
C 0 10 770649 5715.53 574 579 134.7
C 15 214 220587 1632.92 574 579 134.7
C 0 207 133152 983.97 574 579 134.7
D 2 250 495326 3521.86 571 555 140.5
D 13 249 239811 1703.06 571 555 140.5
D 12 6 131671 933.3 571 555 140.5

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