ASTROSAT CZTI

Data Quality Report

Orbit 26661

Creation date: 2024-06-27T19:31:30.504136
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_145T01_9000003848_26661cztM0_level2.evt modeM0/AS1A09_145T01_9000003848_26661cztM0_level2_quad_clean.evt
Size (bytes)889,873,920147,075,840
Size848.6 MB 140.3 MB
Events in quadrant A5,270,702976,867
Events in quadrant B6,048,199965,853
Events in quadrant C5,398,221929,290
Events in quadrant D9,547,809878,857

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0214970
B0239480
C0220090
D0356880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10148440.433583%
B101492332.295793%
C101491231.211942%
D101495355.271455%

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 12558 10150 1 1 0.01% 0.01%
B 12559 10151 113 113 0.90% 1.11%
C 12559 10151 8 8 0.06% 0.08%
D 12559 10151 335 335 2.67% 3.30%

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 27602 97.9 1359 1339 268.3
A 13 254 15965 54.52 1359 1339 268.3
A 0 226 11628 38.35 1359 1339 268.3
B 10 245 735064 2956.22 1321 1292 248.2
B 0 189 99274 394.75 1321 1292 248.2
B 3 112 32064 123.97 1321 1292 248.2
C 14 238 207892 699.9 1277 1292 295.2
C 3 233 81128 270.46 1277 1292 295.2
C 2 16 68298 226.99 1277 1292 295.2
D 1 52 2555628 8116.61 1289 1254 314.7
D 7 80 1865858 5924.85 1289 1254 314.7
D 2 250 146963 463.0 1289 1254 314.7

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