ASTROSAT CZTI

Data Quality Report

Orbit 17178

Creation date: 2024-06-27T17:33:13.353812
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_185T04_9000002548_17178cztM0_level2.evt modeM0/AS1A05_185T04_9000002548_17178cztM0_level2_quad_clean.evt
Size (bytes)493,490,88099,504,000
Size470.6 MB 94.9 MB
Events in quadrant A3,159,203664,125
Events in quadrant B3,292,505661,846
Events in quadrant C3,242,801626,815
Events in quadrant D4,807,746605,369

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137461
B0140691
C0138491
D0187901

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6522440.674640%
B6522530.812634%
C6523691.057795%
D65223234.952469%

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 7647 6522 0 0 0.00% 0.00%
B 7647 6523 8 8 0.10% 0.12%
C 7648 6524 0 0 0.00% 0.00%
D 7647 6522 262 262 3.43% 4.02%

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 12 189 49059 296.71 805 789 162.7
A 15 174 13640 78.99 805 789 162.7
A 0 226 7086 38.7 805 789 162.7
B 7 220 57423 376.31 797 778 150.5
B 0 189 44006 287.18 797 778 150.5
B 0 197 34050 221.04 797 778 150.5
C 3 233 136440 762.55 764 768 177.9
C 14 238 117219 654.52 764 768 177.9
C 7 220 9022 46.39 764 768 177.9
D 5 222 1089034 5804.71 772 751 187.5
D 1 52 576635 3071.67 772 751 187.5
D 12 233 111675 591.65 772 751 187.5

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