ASTROSAT CZTI

Data Quality Report

Orbit 12807

Creation date: 2024-06-27T16:32:35.241894
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/AS1G08_071T01_9000001888_12807cztM0_level2.evt modeM0/AS1G08_071T01_9000001888_12807cztM0_level2_quad_clean.evt
Size (bytes)493,084,80078,462,720
Size470.2 MB 74.8 MB
Events in quadrant A3,422,838486,458
Events in quadrant B4,429,809480,601
Events in quadrant C3,153,340482,736
Events in quadrant D3,479,423466,330

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141293
B0173962
C0136002
D0145292

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6592530.804005%
B65923194.839199%
C6592340.515777%
D6592931.410801%

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 7773 6594 0 0 0.00% 0.00%
B 7773 6594 182 182 2.34% 2.76%
C 7773 6594 1 1 0.01% 0.02%
D 7773 6594 62 62 0.80% 0.94%

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 153889 899.75 846 828 170.1
A 8 15 15798 88.0 846 828 170.1
A 0 226 7581 39.69 846 828 170.1
B 4 239 651436 4215.12 822 802 154.4
B 0 219 256165 1654.36 822 802 154.4
B 10 245 230683 1489.28 822 802 154.4
C 14 234 8160 39.79 806 811 184.7
C 13 61 5898 27.55 806 811 184.7
C 3 202 2026 6.58 806 811 184.7
D 1 52 145158 745.95 810 790 193.5
D 10 253 118297 607.16 810 790 193.5
D 8 195 82202 420.66 810 790 193.5

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