ASTROSAT CZTI

Data Quality Report

Orbit 27757

Creation date: 2024-06-27T19:43:58.001228
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/AS1A10_002T05_9000004000_27757cztM0_level2.evt modeM0/AS1A10_002T05_9000004000_27757cztM0_level2_quad_clean.evt
Size (bytes)1,193,886,720190,779,840
Size1.1 GB 181.9 MB
Events in quadrant A6,780,7671,249,258
Events in quadrant B11,326,8991,158,449
Events in quadrant C8,485,0201,203,096
Events in quadrant D8,599,2551,180,713

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0292620
B0427320
C0338250
D0352900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A142812411.687557%
B14282182412.771321%
C142827034.922280%
D142814012.807927%

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 16231 14281 5 5 0.03% 0.04%
B 16232 14282 1219 1219 7.51% 8.54%
C 16232 14282 324 324 2.00% 2.27%
D 16231 14281 205 205 1.26% 1.44%

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 26208 70.3 1748 1710 348.5
A 13 254 23373 62.16 1748 1710 348.5
A 3 137 17198 44.44 1748 1710 348.5
B 10 245 3005744 9484.05 1652 1607 316.8
B 3 64 1713375 5404.05 1652 1607 316.8
B 0 190 48373 147.64 1652 1607 316.8
C 3 233 1749398 4517.46 1655 1662 386.9
C 14 238 260700 669.55 1655 1662 386.9
C 10 22 27431 66.61 1655 1662 386.9
D 1 52 1901557 4726.06 1689 1643 402.0
D 2 250 172758 425.65 1689 1643 402.0
D 13 104 68007 165.08 1689 1643 402.0

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