ASTROSAT CZTI

Data Quality Report

Orbit 21434

Creation date: 2024-06-27T18:27:46.002685
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/AS1T03_140T01_9000003160_21434cztM0_level2.evt modeM0/AS1T03_140T01_9000003160_21434cztM0_level2_quad_clean.evt
Size (bytes)1,971,754,560330,926,400
Size1.8 GB 315.6 MB
Events in quadrant A13,258,0162,061,555
Events in quadrant B13,603,5232,084,124
Events in quadrant C13,251,5112,021,911
Events in quadrant D17,720,5891,939,464

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05660
B05660
C05660
D05660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0571805
B0580115
C0571915
D0716346

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0450
B0450
C0450
D0450

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A278701520.545389%
B278712000.717592%
C278712470.886226%
D278705702.045210%

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 32285 27870 0 0 0.00% 0.00%
B 32286 27872 14 14 0.04% 0.05%
C 32286 27871 0 0 0.00% 0.00%
D 32285 27871 449 449 1.39% 1.61%

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 11 47 97960 140.14 3404 3339 675.2
A 13 254 43488 59.46 3404 3339 675.2
A 3 1 37656 50.82 3404 3339 675.2
B 3 64 133635 202.9 3398 3318 642.3
B 0 230 80949 120.87 3398 3318 642.3
B 12 111 77502 115.5 3398 3318 642.3
C 14 238 514590 669.69 3259 3274 763.5
C 13 61 22549 25.25 3259 3274 763.5
C 3 233 21177 23.45 3259 3274 763.5
D 12 235 1683161 2138.57 3276 3186 785.6
D 7 38 1136187 1442.29 3276 3186 785.6
D 1 20 1046863 1328.58 3276 3186 785.6

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