ASTROSAT CZTI

Data Quality Report

Orbit 26888

Creation date: 2024-06-27T19:34:05.006125
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/AS1A09_038T11_9000003878_26888cztM0_level2.evt modeM0/AS1A09_038T11_9000003878_26888cztM0_level2_quad_clean.evt
Size (bytes)162,599,04030,957,120
Size155.1 MB 29.5 MB
Events in quadrant A1,693,836197,922
Events in quadrant B1,073,799213,470
Events in quadrant C768,574208,743
Events in quadrant D1,278,206199,788

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A061760
B042620
C032670
D049100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A159221313.379397%
B1592573.580402%
C1592211.319095%
D1592704.396985%

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 2382 1592 130 130 5.46% 8.17%
B 2382 1593 6 6 0.25% 0.38%
C 2382 1593 0 0 0.00% 0.00%
D 2382 1592 42 42 1.76% 2.64%

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 0 13 736389 17856.33 195 192 41.2
A 6 16 189413 4589.52 195 192 41.2
A 7 192 9315 221.28 195 192 41.2
B 0 190 238379 5830.67 200 195 40.9
B 10 246 36057 877.89 200 195 40.9
B 15 33 7434 177.21 200 195 40.9
C 14 238 31173 681.85 187 187 45.4
C 3 233 3891 81.51 187 187 45.4
C 15 208 1916 38.05 187 187 45.4
D 1 52 392358 8507.23 187 183 46.1
D 2 250 83469 1806.68 187 183 46.1
D 12 233 65503 1416.95 187 183 46.1

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