ASTROSAT CZTI

Data Quality Report

Orbit 12156

Creation date: 2024-06-27T16:23:08.629055
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_065T01_9000001796_12156cztM0_level2.evt modeM0/AS1G08_065T01_9000001796_12156cztM0_level2_quad_clean.evt
Size (bytes)528,278,40081,645,120
Size503.8 MB 77.9 MB
Events in quadrant A3,509,027525,987
Events in quadrant B5,458,883470,315
Events in quadrant C3,173,233513,971
Events in quadrant D3,410,831502,280

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145283
B0206612
C0136402
D0143222

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65881091.654523%
B658876811.657559%
C6588570.865209%
D6588831.259866%

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 7799 6589 14 14 0.18% 0.21%
B 7799 6590 515 515 6.60% 7.81%
C 7799 6589 0 0 0.00% 0.00%
D 7799 6589 29 29 0.37% 0.44%

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 1 162 95561 552.17 853 837 171.5
A 1 178 38182 217.69 853 837 171.5
A 1 161 35897 204.37 853 837 171.5
B 0 85 687727 4670.67 791 774 147.1
B 4 239 657204 4463.14 791 774 147.1
B 15 201 527881 3583.86 791 774 147.1
C 3 233 6620 31.21 812 816 186.0
C 13 61 6056 28.18 812 816 186.0
C 15 208 3342 13.58 812 816 186.0
D 1 52 105373 540.76 817 797 193.4
D 10 157 43432 220.47 817 797 193.4
D 7 71 35216 177.98 817 797 193.4

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