ASTROSAT CZTI

Data Quality Report

Orbit 28703

Creation date: 2024-06-27T19:55:09.194483
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/AS1A10_021T08_9000004118_28703cztM0_level2.evt modeM0/AS1A10_021T08_9000004118_28703cztM0_level2_quad_clean.evt
Size (bytes)573,160,320103,982,400
Size546.6 MB 99.2 MB
Events in quadrant A3,450,449692,576
Events in quadrant B3,438,829705,286
Events in quadrant C3,503,464672,277
Events in quadrant D6,540,813641,415

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137992
B0137922
C0140742
D0238272

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6265981.564246%
B62651191.899441%
C62651722.745411%
D6265101516.201117%

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 7550 6265 0 0 0.00% 0.00%
B 7550 6265 2 2 0.03% 0.03%
C 7550 6265 0 0 0.00% 0.00%
D 7550 6265 899 899 11.91% 14.35%

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 11358 59.54 892 876 176.0
A 0 226 7771 39.17 892 876 176.0
A 3 137 7612 38.26 892 876 176.0
B 12 111 19436 113.88 871 851 163.2
B 11 111 17789 103.79 871 851 163.2
B 14 111 16924 98.49 871 851 163.2
C 14 238 150950 766.88 850 860 195.7
C 14 254 18428 89.76 850 860 195.7
C 10 22 12246 58.18 850 860 195.7
D 1 52 2532014 13379.53 806 790 189.2
D 7 80 434859 2294.4 806 790 189.2
D 8 195 249369 1313.94 806 790 189.2

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