ASTROSAT CZTI

Data Quality Report

Orbit 31974

Creation date: 2024-06-27T20:34:46.468154
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_053T10_9000004670_31974cztM0_level2.evt modeM0/AS1A10_053T10_9000004670_31974cztM0_level2_quad_clean.evt
Size (bytes)1,081,293,120125,585,280
Size1.0 GB 119.8 MB
Events in quadrant A5,419,904792,996
Events in quadrant B8,677,144803,620
Events in quadrant C10,630,809707,105
Events in quadrant D7,312,563771,927

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0224405
B0332022
C0387342
D0287092

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02140
B02140
C02140
D02140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10503940.894982%
B105052972.827225%
C10505184217.534507%
D105051651.570681%

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 12919 10504 0 0 0.00% 0.00%
B 12920 10505 95 95 0.74% 0.90%
C 12920 10505 1188 1188 9.20% 11.31%
D 12920 10506 82 82 0.63% 0.78%

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 13 254 15986 52.89 1404 1380 276.2
A 3 137 13552 44.08 1404 1380 276.2
A 0 226 11831 37.84 1404 1380 276.2
B 6 159 2783376 10817.48 1388 1358 257.2
B 10 245 403569 1563.94 1388 1358 257.2
B 12 111 31304 116.44 1388 1358 257.2
C 0 10 4908563 16380.14 1307 1320 299.6
C 3 233 338101 1124.16 1307 1320 299.6
C 14 238 216500 718.26 1307 1320 299.6
D 11 164 1172585 3631.31 1377 1347 322.5
D 8 195 318521 983.37 1377 1347 322.5
D 7 238 313545 967.94 1377 1347 322.5

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