ASTROSAT CZTI

Data Quality Report

Orbit 34562

Creation date: 2022-02-18T10:41:12.544464
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_167T01_9000004940_34562cztM0_level2.evt modeM0/AS1A05_167T01_9000004940_34562cztM0_level2_quad_clean.evt
Size (bytes)1,266,019,200175,060,800
Size1.2 GB 167.0 MB
Events in quadrant A6,747,5021,091,879
Events in quadrant B8,519,1051,114,293
Events in quadrant C7,051,8951,103,458
Events in quadrant D15,059,2011,004,961

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02900
B02900
C02900
D02900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0470
B0470
C0470
D0470

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0296454
B0349223
C0297743
D0547273

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14305470.328556%
B143053612.523593%
C14305240.167774%
D14305149910.478854%

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 18903 14308 15 15 0.08% 0.10%
B 18903 14308 205 205 1.08% 1.43%
C 18903 14308 12 12 0.06% 0.08%
D 18903 14308 1217 1217 6.44% 8.51%

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 9 143 125235 372.92 1663 1627 331.5
A 10 83 73694 217.42 1663 1627 331.5
A 15 17 48382 141.06 1663 1627 331.5
B 5 172 1467804 4744.34 1644 1605 309.0
B 0 190 135512 433.3 1644 1605 309.0
B 4 232 109993 350.72 1644 1605 309.0
C 15 214 593540 1601.47 1608 1620 369.6
C 0 10 116957 312.05 1608 1620 369.6
C 14 67 36580 94.59 1608 1620 369.6
D 8 195 3968597 9552.77 1525 1492 415.3
D 7 80 3514240 8458.68 1525 1492 415.3
D 1 47 354558 850.18 1525 1492 415.3

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