ASTROSAT CZTI

Data Quality Report

Orbit 11265

Creation date: 2024-06-27T16:10:41.112982
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/AS1A04_080T02_9000001646_11265cztM0_level2.evt modeM0/AS1A04_080T02_9000001646_11265cztM0_level2_quad_clean.evt
Size (bytes)231,114,24024,027,840
Size220.4 MB 22.9 MB
Events in quadrant A1,766,691142,644
Events in quadrant B1,851,897137,520
Events in quadrant C1,268,547145,188
Events in quadrant D1,944,227125,616

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A068962
B071211
C054381
D074691

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A24411817.414994%
B244135514.543220%
C24411245.079885%
D244130612.535846%

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 2581 2442 18 18 0.70% 0.74%
B 2581 2441 97 97 3.76% 3.97%
C 2581 2442 0 0 0.00% 0.00%
D 2581 2442 119 119 4.61% 4.87%

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 13 251 379956 5497.39 320 311 69.1
A 14 238 56907 819.53 320 311 69.1
A 8 5 31111 445.99 320 311 69.1
B 4 239 310160 4696.81 316 307 66.0
B 3 64 269149 4075.16 316 307 66.0
B 4 81 16396 243.88 316 307 66.0
C 8 128 3719 42.87 323 324 79.2
C 13 61 2336 25.41 323 324 79.2
C 8 112 1866 19.47 323 324 79.2
D 10 253 347238 4515.21 300 291 76.8
D 1 52 227833 2961.26 300 291 76.8
D 8 195 80484 1043.64 300 291 76.8

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