ASTROSAT CZTI

Data Quality Report

Orbit 27047

Creation date: 2024-06-27T19:35:52.864888
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/AS1A09_120T02_9000003904_27047cztM0_level2.evt modeM0/AS1A09_120T02_9000003904_27047cztM0_level2_quad_clean.evt
Size (bytes)1,671,010,560227,776,320
Size1.6 GB 217.2 MB
Events in quadrant A19,604,2951,312,156
Events in quadrant B9,347,2611,510,563
Events in quadrant C8,826,1931,445,573
Events in quadrant D11,610,9731,384,127

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0703260
B0385140
C0369680
D0460680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18062405122.428303%
B180632821.561202%
C180632221.229032%
D180636643.676023%

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 19807 18062 2857 2857 14.42% 15.82%
B 19808 18063 92 92 0.46% 0.51%
C 19808 18063 6 6 0.03% 0.03%
D 19808 18063 547 547 2.76% 3.03%

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 14 235 11555876 27898.59 2061 2022 414.1
A 6 16 53700 124.78 2061 2022 414.1
A 8 192 43501 100.16 2061 2022 414.1
B 0 189 388776 905.57 2233 2177 426.9
B 10 246 104133 238.82 2233 2177 426.9
B 0 219 55301 124.44 2233 2177 426.9
C 14 238 343632 668.31 2161 2180 510.9
C 15 208 39462 72.97 2161 2180 510.9
C 13 61 14737 24.58 2161 2180 510.9
D 1 52 2949656 5751.48 2150 2095 512.5
D 2 250 386224 749.54 2150 2095 512.5
D 2 234 78185 148.47 2150 2095 512.5

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