ASTROSAT CZTI

Data Quality Report

Orbit 21909

Creation date: 2024-06-27T18:33:48.341233
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/AS1A07_010T11_9000003240_21909cztM0_level2.evt modeM0/AS1A07_010T11_9000003240_21909cztM0_level2_quad_clean.evt
Size (bytes)1,554,039,360303,122,880
Size1.4 GB 289.1 MB
Events in quadrant A10,003,3531,956,695
Events in quadrant B11,163,6621,980,592
Events in quadrant C10,322,2741,897,498
Events in quadrant D14,097,4411,841,314

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04459352
B04749954
C04520055
D05731090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04440
B04440
C04440
D04440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A218651960.896410%
B218644832.209111%
C218624111.879974%
D2185813526.185378%

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 23758 21886 2 2 0.01% 0.01%
B 23758 21885 178 178 0.75% 0.81%
C 23758 21882 41 41 0.17% 0.19%
D 23759 21880 1143 1143 4.81% 5.22%

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 5 16 84872 161.35 2561 2501 510.5
A 13 254 40222 73.89 2561 2501 510.5
A 4 2 35518 64.67 2561 2501 510.5
B 3 64 846222 1759.24 2555 2485 479.6
B 0 197 143277 293.56 2555 2485 479.6
B 0 190 84032 170.03 2555 2485 479.6
C 14 238 391835 677.32 2468 2479 574.8
C 10 22 289883 499.97 2468 2479 574.8
C 13 61 17128 25.48 2468 2479 574.8
D 1 52 4382464 7354.11 2454 2377 595.6
D 2 136 177903 294.71 2454 2377 595.6
D 2 234 96730 158.42 2454 2377 595.6

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