ASTROSAT CZTI

Data Quality Report

Orbit 23421

Creation date: 2024-06-27T18:54:20.522935
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/AS1A07_138T04_9000003462_23421cztM0_level2.evt modeM0/AS1A07_138T04_9000003462_23421cztM0_level2_quad_clean.evt
Size (bytes)185,621,76036,299,520
Size177.0 MB 34.6 MB
Events in quadrant A1,323,753234,262
Events in quadrant B1,391,707239,956
Events in quadrant C1,342,741225,855
Events in quadrant D1,395,943223,879

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A053141
B055361
C053871
D056031

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A24261345.523495%
B24261405.770816%
C24261305.358615%
D24261124.616653%

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 3676 2426 0 0 0.00% 0.00%
B 3676 2426 7 7 0.19% 0.29%
C 3676 2426 0 0 0.00% 0.00%
D 3676 2426 5 5 0.14% 0.21%

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 13 254 3564 46.01 343 335 70.2
A 0 226 2976 37.63 343 335 70.2
A 3 137 2886 36.35 343 335 70.2
B 0 189 56576 864.85 336 328 65.0
B 12 111 7557 111.15 336 328 65.0
B 11 111 6718 98.25 336 328 65.0
C 14 238 51926 694.48 321 322 74.3
C 10 9 33985 453.03 321 322 74.3
C 7 247 3191 38.61 321 322 74.3
D 1 52 110832 1350.89 331 321 81.8
D 12 233 15963 191.21 331 321 81.8
D 2 234 10016 118.51 331 321 81.8

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