ASTROSAT CZTI

Data Quality Report

Orbit 35569

Creation date: 2022-04-27T10:21:12.932459
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/AS1T05_026T01_9000005092_35569cztM0_level2.evt modeM0/AS1T05_026T01_9000005092_35569cztM0_level2_quad_clean.evt
Size (bytes)516,818,88067,671,360
Size492.9 MB 64.5 MB
Events in quadrant A5,271,930379,548
Events in quadrant B3,545,502437,369
Events in quadrant C3,382,655438,645
Events in quadrant D3,098,105427,730

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0189953
B0141292
C0133442
D0128692

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5211123823.757436%
B52114238.117444%
C52111482.840146%
D52111112.130109%

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 7035 5212 1120 1120 15.92% 21.49%
B 7035 5212 270 270 3.84% 5.18%
C 7035 5212 108 108 1.54% 2.07%
D 7035 5212 98 98 1.39% 1.88%

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 15 169 3017223 27399.7 545 533 110.1
A 10 83 127444 1152.69 545 533 110.1
A 13 6 13957 121.93 545 533 110.1
B 5 172 1219675 11262.61 571 557 108.2
B 4 81 32974 299.48 571 557 108.2
B 0 189 20174 181.23 571 557 108.2
C 0 10 473460 3556.66 570 574 133.0
C 9 187 382808 2874.85 570 574 133.0
C 15 214 232698 1745.85 570 574 133.0
D 7 80 250583 1798.61 569 552 139.0
D 8 195 166647 1194.81 569 552 139.0
D 13 249 112552 805.68 569 552 139.0

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