ASTROSAT CZTI

Data Quality Report

Orbit 35217

Creation date: 2022-04-03T15:16:55.280944
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_004T01_9000005052_35217cztM0_level2.evt modeM0/AS1C07_004T01_9000005052_35217cztM0_level2_quad_clean.evt
Size (bytes)665,366,40083,102,400
Size634.5 MB 79.3 MB
Events in quadrant A2,979,279567,194
Events in quadrant B7,571,153485,421
Events in quadrant C3,331,581574,126
Events in quadrant D5,921,534528,391

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119883
B0261092
C0132422
D0212382

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5151741.436614%
B5151199738.769171%
C51511512.931470%
D51512745.319355%

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 7123 5152 49 49 0.69% 0.95%
B 7123 5152 1296 1296 18.19% 25.16%
C 7123 5152 105 105 1.47% 2.04%
D 7123 5152 200 200 2.81% 3.88%

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 15 174 241909 1806.13 674 664 133.6
A 10 83 98494 732.43 674 664 133.6
A 13 6 17432 125.54 674 664 133.6
B 5 236 5030204 47500.26 558 545 105.9
B 5 172 175269 1650.1 558 545 105.9
B 4 232 125533 1180.39 558 545 105.9
C 0 10 314597 2117.33 648 655 148.3
C 15 214 218267 1467.65 648 655 148.3
C 0 207 143730 964.94 648 655 148.3
D 8 195 2794928 18088.04 645 630 154.5
D 2 250 249907 1613.62 645 630 154.5
D 10 118 87362 561.43 645 630 154.5

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