ASTROSAT CZTI

Data Quality Report

Orbit 26770

Creation date: 2024-06-27T19:32:39.432704
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/AS1A09_038T08_9000003856_26770cztM0_level2.evt modeM0/AS1A09_038T08_9000003856_26770cztM0_level2_quad_clean.evt
Size (bytes)539,890,56076,576,320
Size514.9 MB 73.0 MB
Events in quadrant A2,317,639546,584
Events in quadrant B4,287,998518,398
Events in quadrant C1,983,334535,295
Events in quadrant D7,464,730409,372

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A098720
B0157730
C088930
D0252540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4380230.525114%
B438153212.143346%
C4381230.524994%
D4381187942.889751%

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 4380 4380 14 14 0.32% 0.32%
B 4381 4381 383 383 8.74% 8.74%
C 4381 4381 1 1 0.02% 0.02%
D 4381 4381 1542 1542 35.20% 35.20%

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 0 13 393665 3968.85 492 484 99.1
A 12 96 15899 155.6 492 484 99.1
A 13 254 6968 65.45 492 484 99.1
B 0 189 2417126 26729.68 472 460 90.4
B 12 111 10838 114.79 472 460 90.4
B 11 111 9712 102.33 472 460 90.4
C 14 238 77102 686.97 477 480 111.5
C 2 16 20316 177.84 477 480 111.5
C 15 208 15384 133.62 477 480 111.5
D 7 80 5581080 58694.72 390 379 95.1
D 1 52 266675 2800.75 390 379 95.1
D 2 250 74595 780.56 390 379 95.1

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