ASTROSAT CZTI

Data Quality Report

Orbit 41469

Creation date: 2024-06-27T22:29:37.086220
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_110T01_9000005672_41469cztM0_level2.fits modeM0/AS1T05_110T01_9000005672_41469cztM0_level2_quad_clean.evt
Size (bytes)112,979,52029,165,760
Size107.7 MB 27.8 MB
Events in quadrant A1,120,329197,843
Events in quadrant B878,432201,933
Events in quadrant C1,133,009175,956
Events in quadrant D905,959174,581

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A044811
B038341
C044331
D039341

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1820231.263736%
B182060.329670%
C18201176.428571%
D1820120.659341%

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 3253 1821 15 15 0.46% 0.82%
B 3253 1821 2 2 0.06% 0.11%
C 3253 1821 109 109 3.35% 5.99%
D 3253 1821 9 9 0.28% 0.49%

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 221564 4983.46 205 200 44.4
A 2 79 75300 1690.69 205 200 44.4
A 13 248 26624 594.87 205 200 44.4
B 5 255 46706 1136.14 201 195 40.9
B 0 190 34003 825.84 201 195 40.9
B 4 81 4712 110.34 201 195 40.9
C 0 10 307629 6670.99 190 190 46.1
C 15 214 76611 1658.23 190 190 46.1
C 10 70 2118 41.83 190 190 46.1
D 13 249 51712 1010.3 200 193 51.0
D 1 52 25658 499.37 200 193 51.0
D 10 199 17095 331.45 200 193 51.0

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