ASTROSAT CZTI

Data Quality Report

Orbit 11920

Creation date: 2024-06-27T16:20:04.604828
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/AS1A04_088T05_9000001764_11920cztM0_level2.evt modeM0/AS1A04_088T05_9000001764_11920cztM0_level2_quad_clean.evt
Size (bytes)1,435,409,280231,050,880
Size1.3 GB 220.3 MB
Events in quadrant A9,916,1171,438,033
Events in quadrant B12,286,1311,390,944
Events in quadrant C8,578,7971,464,253
Events in quadrant D11,410,3271,398,629

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0411546
B0483865
C0387015
D0458115

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03880
B03880
C03880
D03880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A189494482.364241%
B1894911886.269460%
C189492231.176843%
D189495132.707267%

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 20760 18950 5 5 0.02% 0.03%
B 20760 18950 635 635 3.06% 3.35%
C 20760 18952 0 0 0.00% 0.00%
D 20760 18951 230 230 1.11% 1.21%

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 1 162 381654 831.28 2238 2186 456.5
A 8 15 333544 725.88 2238 2186 456.5
A 1 178 194655 421.63 2238 2186 456.5
B 4 239 2613300 6125.81 2208 2153 426.3
B 15 204 539673 1261.03 2208 2153 426.3
B 0 85 152216 352.05 2208 2153 426.3
C 13 61 16040 27.37 2199 2216 505.0
C 14 234 8253 11.95 2199 2216 505.0
C 3 202 5338 6.18 2199 2216 505.0
D 8 195 1324448 2510.98 2182 2116 526.6
D 1 52 415343 784.68 2182 2116 526.6
D 10 199 368269 695.29 2182 2116 526.6

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