ASTROSAT CZTI

Data Quality Report

Orbit 34352

Creation date: 2022-02-04T04:59:44.451550
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/AS1A05_019T01_9000004906_34352cztM0_level2.evt modeM0/AS1A05_019T01_9000004906_34352cztM0_level2_quad_clean.evt
Size (bytes)637,116,48054,460,800
Size607.6 MB 51.9 MB
Events in quadrant A2,317,382369,765
Events in quadrant B3,266,881369,684
Events in quadrant C3,049,063359,661
Events in quadrant D10,323,380198,448

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0101422
B0128471
C0120311
D0340881

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A499770.140084%
B49971583.161897%
C49971402.801681%
D4997314162.857715%

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 7029 4998 0 0 0.00% 0.00%
B 7029 4998 118 118 1.68% 2.36%
C 7029 4998 117 117 1.66% 2.34%
D 7029 4998 3200 3200 45.53% 64.03%

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 31380 259.03 586 574 118.9
A 13 6 13835 111.5 586 574 118.9
A 13 254 8471 66.4 586 574 118.9
B 5 172 638671 5689.66 582 567 112.2
B 5 31 133111 1181.83 582 567 112.2
B 15 201 33037 289.52 582 567 112.2
C 14 254 320163 2408.26 571 576 132.7
C 15 214 209689 1575.78 571 576 132.7
C 0 10 151959 1140.75 571 576 132.7
D 7 223 7187231 65954.56 399 391 109.0
D 8 195 797952 7319.32 399 391 109.0
D 12 235 323567 2965.83 399 391 109.0

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