ASTROSAT CZTI

Data Quality Report

Orbit 27087

Creation date: 2024-06-27T19:36:22.858953
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/AS1T03_231T01_9000003910_27087cztM0_level2.evt modeM0/AS1T03_231T01_9000003910_27087cztM0_level2_quad_clean.evt
Size (bytes)242,064,00029,782,080
Size230.9 MB 28.4 MB
Events in quadrant A2,015,500165,242
Events in quadrant B1,712,969170,145
Events in quadrant C1,594,586162,758
Events in quadrant D1,770,435157,190

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A082270
B071900
C069700
D074840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3472631.814516%
B347230.086406%
C3473130.374316%
D347360.172761%

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 3472 3472 40 40 1.15% 1.15%
B 3472 3472 0 0 0.00% 0.00%
C 3473 3473 0 0 0.00% 0.00%
D 3473 3473 3 3 0.09% 0.09%

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 14 235 438317 5285.12 402 395 82.9
A 12 189 14120 165.64 402 395 82.9
A 4 2 10715 124.55 402 395 82.9
B 3 112 83109 1042.89 404 393 79.3
B 0 189 26257 326.1 404 393 79.3
B 0 219 11840 144.33 404 393 79.3
C 14 238 63453 673.09 391 393 93.7
C 13 61 2766 25.33 391 393 93.7
C 15 208 1859 15.65 391 393 93.7
D 1 52 249726 2616.15 392 382 95.3
D 2 250 20617 212.31 392 382 95.3
D 12 233 18613 191.28 392 382 95.3

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