ASTROSAT CZTI

Data Quality Report

Orbit 36408

Creation date: 2022-06-28T13:05:58.526307
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/AS1T04_084T01_9000005198_36408cztM0_level2.evt modeM0/AS1T04_084T01_9000005198_36408cztM0_level2_quad_clean.evt
Size (bytes)426,908,16069,073,920
Size407.1 MB 65.9 MB
Events in quadrant A2,540,878445,305
Events in quadrant B3,798,197440,403
Events in quadrant C2,908,625438,124
Events in quadrant D3,337,426412,821

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106543
B0146062
C0114812
D0132322

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5057160.316393%
B50572234.409729%
C50571533.025509%
D50571462.887087%

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 7088 5058 3 3 0.04% 0.06%
B 7088 5058 150 150 2.12% 2.97%
C 7088 5058 110 110 1.55% 2.17%
D 7088 5058 143 143 2.02% 2.83%

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 184015 1507.44 606 595 121.7
A 13 254 8492 64.9 606 595 121.7
A 13 6 7018 52.79 606 595 121.7
B 5 172 503607 4371.61 595 579 115.1
B 5 255 312061 2706.96 595 579 115.1
B 4 171 215972 1871.89 595 579 115.1
C 0 10 381464 2821.54 582 586 135.0
C 15 214 214077 1581.54 582 586 135.0
C 6 11 22883 165.17 582 586 135.0
D 12 6 419032 2905.18 583 566 144.0
D 2 153 383082 2655.6 583 566 144.0
D 2 250 95022 655.76 583 566 144.0

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