ASTROSAT CZTI

Data Quality Report

Orbit 18533

Creation date: 2024-06-27T17:51:15.618885
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/AS1A05_103T02_9000002750_18533cztM0_level2.evt modeM0/AS1A05_103T02_9000002750_18533cztM0_level2_quad_clean.evt
Size (bytes)191,450,88023,512,320
Size182.6 MB 22.4 MB
Events in quadrant A1,380,696130,724
Events in quadrant B1,362,623132,709
Events in quadrant C1,352,194128,761
Events in quadrant D1,518,292127,286

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A058191
B056951
C056511
D063381

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A26761043.886398%
B26761073.998505%
C26761013.774290%
D26761043.886398%

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 3016 2676 0 0 0.00% 0.00%
B 3016 2676 1 1 0.03% 0.04%
C 3016 2676 0 0 0.00% 0.00%
D 3016 2676 25 25 0.83% 0.93%

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 56189 791.14 340 332 70.6
A 14 111 10035 137.43 340 332 70.6
A 13 254 4595 60.38 340 332 70.6
B 0 197 12568 179.2 342 333 68.3
B 12 111 8368 117.68 342 333 68.3
B 15 222 7844 110.01 342 333 68.3
C 14 238 48922 606.22 332 334 80.1
C 8 128 3946 45.07 332 334 80.1
C 13 61 2351 25.17 332 334 80.1
D 7 238 141531 1687.69 332 321 83.7
D 1 52 74619 887.98 332 321 83.7
D 13 172 26349 311.08 332 321 83.7

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