ASTROSAT CZTI

Data Quality Report

Orbit 42845

Creation date: 2024-06-27T22:44:55.526531
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/AS1T05_138T01_9000005828_42845cztM0_level2.fits modeM0/AS1T05_138T01_9000005828_42845cztM0_level2_quad_clean.evt
Size (bytes)1,173,119,040252,210,240
Size1.1 GB 240.5 MB
Events in quadrant A8,920,9801,684,855
Events in quadrant B7,303,5041,738,857
Events in quadrant C10,123,5611,732,288
Events in quadrant D15,863,1841,396,863

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0355584
B0326494
C0399234
D0578554

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03220
B03220
C03220
D03220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A156961090.694444%
B15696610.388634%
C156973472.210613%
D15697224714.314837%

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 21247 15700 74 74 0.35% 0.47%
B 21247 15700 42 42 0.20% 0.27%
C 21248 15701 350 350 1.65% 2.23%
D 21248 15701 2057 2057 9.68% 13.10%

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 1595629 4506.06 1721 1686 353.7
A 12 189 285226 801.57 1721 1686 353.7
A 15 237 233858 656.35 1721 1686 353.7
B 5 255 317101 951.85 1712 1665 331.4
B 0 245 101236 300.46 1712 1665 331.4
B 15 85 86887 257.16 1712 1665 331.4
C 14 254 1336366 3354.73 1689 1699 397.8
C 15 214 632327 1585.1 1689 1699 397.8
C 3 233 516784 1294.68 1689 1699 397.8
D 1 52 6121335 15816.57 1591 1548 386.9
D 2 249 857643 2212.57 1591 1548 386.9
D 10 118 734942 1895.45 1591 1548 386.9

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