ASTROSAT CZTI

Data Quality Report

Orbit 18752

Creation date: 2024-06-27T17:54:22.558279
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/AS1A05_156T01_9000002804_18752cztM0_level2.evt modeM0/AS1A05_156T01_9000002804_18752cztM0_level2_quad_clean.evt
Size (bytes)805,121,280150,154,560
Size767.8 MB 143.2 MB
Events in quadrant A5,579,426935,633
Events in quadrant B5,711,932950,998
Events in quadrant C5,852,202923,536
Events in quadrant D6,427,992908,931

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0246882
B0249512
C0254952
D0277402

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02440
B02440
C02440
D02440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11985870.725907%
B119851090.909470%
C119851561.301627%
D119852061.718815%

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 12946 11987 2 2 0.02% 0.02%
B 12946 11987 2 2 0.02% 0.02%
C 12946 11987 2 2 0.02% 0.02%
D 12946 11987 121 121 0.93% 1.01%

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 15 192 64204 217.23 1429 1397 289.1
A 13 254 17894 57.06 1429 1397 289.1
A 0 226 12243 37.51 1429 1397 289.1
B 10 245 49053 174.75 1424 1387 272.8
B 0 230 37691 133.09 1424 1387 272.8
B 12 111 34363 120.89 1424 1387 272.8
C 14 238 213272 656.85 1373 1381 322.6
C 3 233 194541 598.79 1373 1381 322.6
C 0 239 72375 220.08 1373 1381 322.6
D 1 52 480910 1421.12 1387 1346 337.5
D 13 168 471523 1393.3 1387 1346 337.5
D 7 38 157698 463.33 1387 1346 337.5

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