ASTROSAT CZTI

Data Quality Report

Orbit 47280

Creation date: 2024-06-27T23:33:40.794681
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/AS1A13_025T01_9000006312_47280cztM0_level2.fits modeM0/AS1A13_025T01_9000006312_47280cztM0_level2_quad_clean.evt
Size (bytes)1,342,491,840182,880,000
Size1.3 GB 174.4 MB
Events in quadrant A14,457,0691,286,525
Events in quadrant B7,270,6421,346,094
Events in quadrant C5,818,3041,285,716
Events in quadrant D21,165,182736,619

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0521805
B0300092
C0266692
D0716792

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02600
B02600
C02600
D02600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A127449137.164156%
B127466475.076102%
C127462872.251687%
D12746542842.585909%

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 12975 12747 155 155 1.19% 1.22%
B 12976 12748 107 107 0.82% 0.84%
C 12976 12748 13 13 0.10% 0.10%
D 12976 12748 5046 5046 38.89% 39.58%

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 10 83 6779291 22461.02 1454 1419 301.8
A 9 191 1730713 5730.66 1454 1419 301.8
A 15 235 245176 807.78 1454 1419 301.8
B 0 200 802334 2755.97 1459 1410 290.6
B 5 255 114849 390.34 1459 1410 290.6
B 0 198 109748 372.79 1459 1410 290.6
C 14 254 73093 209.28 1448 1453 342.3
C 12 2 41270 116.32 1448 1453 342.3
C 3 233 32129 89.61 1448 1453 342.3
D 6 112 15155124 48542.5 1235 1192 312.2
D 10 181 451971 1443.98 1235 1192 312.2
D 2 249 168635 536.37 1235 1192 312.2

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