ASTROSAT CZTI

Data Quality Report

Orbit 34565

Creation date: 2022-02-18T13:49:21.052504
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_167T01_9000004940_34565cztM0_level2.evt modeM0/AS1A05_167T01_9000004940_34565cztM0_level2_quad_clean.evt
Size (bytes)474,796,80070,338,240
Size452.8 MB 67.1 MB
Events in quadrant A2,639,203451,222
Events in quadrant B3,526,835447,620
Events in quadrant C2,805,996451,074
Events in quadrant D5,048,177408,873

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109193
B0136772
C0111402
D0187212

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5302110.207469%
B53022675.035836%
C5302300.565824%
D53024328.147869%

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 7185 5303 3 3 0.04% 0.06%
B 7185 5303 200 200 2.78% 3.77%
C 7185 5303 22 22 0.31% 0.41%
D 7185 5303 352 352 4.90% 6.64%

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 41271 306.65 665 654 132.5
A 9 143 17933 130.45 665 654 132.5
A 13 254 9748 68.66 665 654 132.5
B 5 172 824146 6772.59 640 626 121.6
B 0 190 70763 576.8 640 626 121.6
B 0 189 59011 480.16 640 626 121.6
C 15 214 224325 1507.87 639 642 148.3
C 0 10 77179 515.94 639 642 148.3
C 14 67 11855 75.59 639 642 148.3
D 8 195 1232256 8070.32 624 608 152.6
D 2 207 603495 3950.39 624 608 152.6
D 7 80 526239 3444.17 624 608 152.6

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