ASTROSAT CZTI

Data Quality Report

Orbit 21283

Creation date: 2024-06-27T18:25:51.053263
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_037T01_9000003140_21283cztM0_level2.evt modeM0/AS1A05_037T01_9000003140_21283cztM0_level2_quad_clean.evt
Size (bytes)186,163,20032,457,600
Size177.5 MB 31.0 MB
Events in quadrant A1,331,393197,915
Events in quadrant B1,366,169203,315
Events in quadrant C1,271,352196,546
Events in quadrant D1,479,610187,645

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A059851
B059921
C057621
D063931

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2756511.850508%
B2756582.104499%
C2756511.850508%
D2756833.011611%

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 3006 2757 18 18 0.60% 0.65%
B 3006 2757 14 14 0.47% 0.51%
C 3006 2757 0 0 0.00% 0.00%
D 3006 2756 39 39 1.30% 1.42%

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 15 174 58923 867.46 322 314 67.6
A 5 16 23073 336.85 322 314 67.6
A 13 254 4503 62.0 322 314 67.6
B 3 64 35373 544.47 326 318 64.4
B 0 228 30275 465.29 326 318 64.4
B 0 245 10142 152.58 326 318 64.4
C 14 238 47600 628.83 312 314 75.2
C 3 233 4167 51.24 312 314 75.2
C 13 61 2142 24.31 312 314 75.2
D 12 233 128081 1668.64 309 301 76.6
D 1 52 92745 1207.19 309 301 76.6
D 13 174 32601 421.79 309 301 76.6

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