ASTROSAT CZTI

Data Quality Report

Orbit 36352

Creation date: 2022-06-19T07:15:52.653776
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_097T17_9000005194_36352cztM0_level2.evt modeM0/AS1A11_097T17_9000005194_36352cztM0_level2_quad_clean.evt
Size (bytes)473,762,88072,048,960
Size451.8 MB 68.7 MB
Events in quadrant A2,893,326446,222
Events in quadrant B3,918,768445,304
Events in quadrant C3,450,474445,918
Events in quadrant D3,680,775427,702

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124673
B0157222
C0139672
D0150632

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5959150.251720%
B59592233.742239%
C5959781.308944%
D59591692.836046%

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 9153 5961 4 4 0.04% 0.07%
B 9153 5961 161 161 1.76% 2.70%
C 9153 5960 88 88 0.96% 1.48%
D 9153 5961 176 176 1.92% 2.95%

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 189196 1379.09 674 659 136.7
A 9 143 77229 560.09 674 659 136.7
A 12 189 15696 109.99 674 659 136.7
B 5 236 561036 4397.39 660 641 127.4
B 5 172 360379 2822.84 660 641 127.4
B 0 189 138512 1081.87 660 641 127.4
C 0 207 453241 2936.26 656 660 154.1
C 15 214 254776 1648.66 656 660 154.1
C 0 10 187337 1211.13 656 660 154.1
D 12 6 389576 2433.26 651 631 159.8
D 2 249 340077 2123.59 651 631 159.8
D 13 249 111327 692.52 651 631 159.8

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