ASTROSAT CZTI

Data Quality Report

Orbit 10046

Creation date: 2024-06-27T15:54:11.931622
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/AS1A03_052T01_9000001436_10046cztM0_level2.evt modeM0/AS1A03_052T01_9000001436_10046cztM0_level2_quad_clean.evt
Size (bytes)105,062,40021,888,000
Size100.2 MB 20.9 MB
Events in quadrant A794,799137,136
Events in quadrant B835,951133,392
Events in quadrant C711,699142,934
Events in quadrant D734,290138,194

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012499
B012591
C012494
D012385

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02210
B02112
C0226
D02210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01393310639
B01439111018
C0126379505
D01325710055

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1470151.020408%
B1418422.961918%
C151280.529101%
D152390.590939%

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 7464 2197 0 0 0.00% 0.00%
B 7465 2153 15 15 0.20% 0.70%
C 7465 2249 0 0 0.00% 0.00%
D 7465 2288 1 1 0.01% 0.04%

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 8 15 91409 2352.86 181 177 38.8
A 15 174 4350 107.62 181 177 38.8
A 15 239 2498 59.86 181 177 38.8
B 4 81 103611 2899.34 176 172 35.7
B 4 239 38468 1073.41 176 172 35.7
B 12 111 3518 93.77 176 172 35.7
C 13 61 1406 27.73 181 183 44.1
C 14 67 1301 25.35 181 183 44.1
C 8 222 1091 20.59 181 183 44.1
D 7 71 13854 272.45 182 177 50.2
D 2 152 9355 182.83 182 177 50.2
D 8 195 5880 113.6 182 177 50.2

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