ASTROSAT CZTI

Data Quality Report

Orbit 11218

Creation date: 2024-06-27T16:09:54.167162
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/AS1G08_075T01_9000001636_11218cztM0_level2.evt modeM0/AS1G08_075T01_9000001636_11218cztM0_level2_quad_clean.evt
Size (bytes)555,301,44071,504,640
Size529.6 MB 68.2 MB
Events in quadrant A6,099,264422,790
Events in quadrant B3,749,886441,031
Events in quadrant C3,067,662438,430
Events in quadrant D3,461,926411,104

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0227073
B0152642
C0134102
D0147362

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64785558.567459%
B64781732.670577%
C6478100.154369%
D64781021.574560%

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 7758 6479 442 442 5.70% 6.82%
B 7758 6479 75 75 0.97% 1.16%
C 7758 6479 2 2 0.03% 0.03%
D 7758 6479 85 85 1.10% 1.31%

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 8 5 1859315 12077.51 763 748 153.9
A 8 15 983656 6387.22 763 748 153.9
A 14 238 189394 1225.88 763 748 153.9
B 4 239 509892 3458.14 787 768 147.2
B 15 204 45602 304.53 787 768 147.2
B 0 214 40730 271.43 787 768 147.2
C 4 254 39749 220.46 770 776 176.8
C 14 67 16671 89.91 770 776 176.8
C 14 251 7676 39.03 770 776 176.8
D 10 253 266481 1474.39 751 731 180.2
D 2 14 83317 458.19 751 731 180.2
D 13 104 52695 288.3 751 731 180.2

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