ASTROSAT CZTI

Data Quality Report

Orbit 34808

Creation date: 2022-03-07T01:11:32.196122
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/AS1C07_005T01_9000004992_34808cztM0_level2.evt modeM0/AS1C07_005T01_9000004992_34808cztM0_level2_quad_clean.evt
Size (bytes)438,675,840103,253,760
Size418.4 MB 98.5 MB
Events in quadrant A2,588,792703,855
Events in quadrant B3,067,710706,477
Events in quadrant C2,867,591686,458
Events in quadrant D4,382,893640,547

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115043
B0127972
C0118742
D0170292

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5567110.197593%
B5567991.778337%
C5567450.808335%
D55673085.532603%

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 7179 5568 5 5 0.07% 0.09%
B 7179 5568 60 60 0.84% 1.08%
C 7179 5568 30 30 0.42% 0.54%
D 7179 5568 267 267 3.72% 4.80%

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 53848 417.22 634 623 127.6
A 15 174 51942 402.28 634 623 127.6
A 7 3 12521 93.27 634 623 127.6
B 5 172 352901 2932.6 631 615 120.1
B 5 255 113032 935.81 631 615 120.1
B 4 232 35252 288.33 631 615 120.1
C 15 214 254193 1810.91 609 613 140.0
C 0 10 144046 1024.31 609 613 140.0
C 14 67 61019 431.38 609 613 140.0
D 8 195 741604 4962.64 596 580 149.3
D 2 249 437147 2923.69 596 580 149.3
D 10 118 360567 2410.84 596 580 149.3

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