ASTROSAT CZTI

Data Quality Report

Orbit 20553

Creation date: 2024-06-27T18:16:47.763586
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_072T04_9000003040_20553cztM0_level2.evt modeM0/AS1A05_072T04_9000003040_20553cztM0_level2_quad_clean.evt
Size (bytes)211,533,12032,817,600
Size201.7 MB 31.3 MB
Events in quadrant A1,410,601207,572
Events in quadrant B1,436,406211,962
Events in quadrant C1,421,971206,256
Events in quadrant D1,965,039187,488

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A057661
B057991
C058051
D074971

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2512642.547771%
B2512692.746815%
C2512893.542994%
D251235414.092357%

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 3832 2513 0 0 0.00% 0.00%
B 3832 2513 2 2 0.05% 0.08%
C 3832 2513 0 0 0.00% 0.00%
D 3832 2513 23 23 0.60% 0.92%

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 10 253 28974 396.42 356 350 72.2
A 15 222 4515 57.68 356 350 72.2
A 0 226 3185 39.26 356 350 72.2
B 0 189 14520 212.16 355 346 66.8
B 0 190 10141 146.61 355 346 66.8
B 7 220 9946 143.7 355 346 66.8
C 14 238 55012 668.1 347 351 81.8
C 8 208 7683 89.62 347 351 81.8
C 13 61 2459 25.77 347 351 81.8
D 1 52 632837 7599.95 344 334 83.2
D 7 238 18800 221.88 344 334 83.2
D 13 153 11079 129.11 344 334 83.2

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