ASTROSAT CZTI

Data Quality Report

Orbit 37766

Creation date: 2024-06-27T21:44:09.541934
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/AS1A11_106T02_9000005344_37766cztM0_level2.evt modeM0/AS1A11_106T02_9000005344_37766cztM0_level2_quad_clean.evt
Size (bytes)518,204,16070,194,240
Size494.2 MB 66.9 MB
Events in quadrant A2,953,473454,872
Events in quadrant B3,070,888452,487
Events in quadrant C2,687,935454,965
Events in quadrant D6,645,423414,561

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116873
B0121872
C0106522
D0233002

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4966511.026983%
B49661112.235199%
C4966210.422876%
D496771714.435273%

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 7029 4967 41 41 0.58% 0.83%
B 7029 4967 86 86 1.22% 1.73%
C 7029 4967 21 21 0.30% 0.42%
D 7030 4968 850 850 12.09% 17.11%

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 330859 2652.09 624 614 124.5
A 9 143 159016 1272.08 624 614 124.5
A 12 189 22584 176.43 624 614 124.5
B 4 81 133758 1196.0 605 592 111.3
B 5 184 129981 1162.08 605 592 111.3
B 5 255 120739 1079.08 605 592 111.3
C 15 214 216359 1571.01 601 607 137.3
C 0 10 84057 607.65 601 607 137.3
C 15 208 21992 155.72 601 607 137.3
D 12 235 3375064 23639.63 589 573 142.7
D 2 249 474654 3321.12 589 573 142.7
D 13 249 149740 1044.97 589 573 142.7

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