ASTROSAT CZTI

Data Quality Report

Orbit 24829

Creation date: 2024-06-27T19:10:20.587930
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/AS1A07_045T01_9000003628_24829cztM0_level2.evt modeM0/AS1A07_045T01_9000003628_24829cztM0_level2_quad_clean.evt
Size (bytes)183,432,96040,147,200
Size174.9 MB 38.3 MB
Events in quadrant A1,313,264261,941
Events in quadrant B1,332,385265,663
Events in quadrant C1,313,254249,862
Events in quadrant D1,412,374246,215

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A055321
B056061
C055411
D058621

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2673301.122334%
B2673471.758324%
C2673511.907969%
D267390.336700%

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 2673 2673 0 0 0.00% 0.00%
B 2673 2673 3 3 0.11% 0.11%
C 2673 2673 0 0 0.00% 0.00%
D 2673 2673 2 2 0.07% 0.07%

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 13 254 3369 43.26 339 331 70.2
A 3 137 3209 40.98 339 331 70.2
A 0 226 2991 37.88 339 331 70.2
B 4 80 10965 160.91 333 324 66.1
B 0 190 8944 130.35 333 324 66.1
B 12 111 8180 118.8 333 324 66.1
C 14 238 52464 667.4 323 325 78.1
C 13 61 2209 24.12 323 325 78.1
C 7 247 1763 18.41 323 325 78.1
D 8 195 112381 1372.52 331 321 81.6
D 1 52 34015 412.69 331 321 81.6
D 2 234 10720 127.37 331 321 81.6

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