ASTROSAT CZTI

Data Quality Report

Orbit 16470

Creation date: 2024-06-27T17:23:14.829150
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/AS1C04_008T01_9000002434_16470cztM0_level2.evt modeM0/AS1C04_008T01_9000002434_16470cztM0_level2_quad_clean.evt
Size (bytes)479,661,120110,422,080
Size457.4 MB 105.3 MB
Events in quadrant A3,597,800731,550
Events in quadrant B3,792,366752,894
Events in quadrant C3,510,549722,988
Events in quadrant D3,197,036695,957

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146693
B0154452
C0144952
D0136032

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6320520.822785%
B63201081.708861%
C6320801.265823%
D6320240.379747%

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 7581 6322 43 43 0.57% 0.68%
B 7581 6322 32 32 0.42% 0.51%
C 7581 6322 0 0 0.00% 0.00%
D 7581 6322 8 8 0.11% 0.13%

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 407938 2418.6 830 816 168.3
A 0 226 7181 37.81 830 816 168.3
A 12 194 5884 30.11 830 816 168.3
B 4 173 231082 1461.85 840 823 157.5
B 15 35 88731 558.1 840 823 157.5
B 3 209 57706 361.13 840 823 157.5
C 3 233 172301 915.83 808 818 187.2
C 14 238 126072 668.94 808 818 187.2
C 7 247 56124 295.37 808 818 187.2
D 13 248 38702 189.89 810 787 199.7
D 2 120 27814 135.36 810 787 199.7
D 2 33 27259 132.58 810 787 199.7

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