ASTROSAT CZTI

Data Quality Report

Orbit 37417

Creation date: 2024-06-27T21:39:43.209099
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_002T01_9000005322_37417cztM0_level2.evt modeM0/AS1A09_002T01_9000005322_37417cztM0_level2_quad_clean.evt
Size (bytes)2,322,887,040383,768,640
Size2.2 GB 366.0 MB
Events in quadrant A16,306,8352,434,343
Events in quadrant B14,364,9362,479,558
Events in quadrant C14,685,1932,465,650
Events in quadrant D23,065,4532,277,946

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0664457
B0618296
C0613856
D0881126

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0930
B0930
C0930
D0930

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05860
B05860
C05860
D05860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A285894151.451607%
B285893061.070342%
C285892250.787016%
D2858917426.093253%

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 37962 28595 301 301 0.79% 1.05%
B 37962 28595 187 187 0.49% 0.65%
C 37962 28595 190 190 0.50% 0.66%
D 37962 28595 1685 1685 4.44% 5.89%

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 15 222 1831903 2892.06 3180 3114 632.3
A 10 83 1233799 1946.21 3180 3114 632.3
A 6 10 318977 499.51 3180 3114 632.3
B 5 255 695876 1163.44 3177 3095 595.5
B 5 172 593589 991.66 3177 3095 595.5
B 0 190 119699 195.82 3177 3095 595.5
C 15 214 1193258 1664.01 3114 3139 715.2
C 14 254 527843 733.63 3114 3139 715.2
C 0 10 318754 441.29 3114 3139 715.2
D 12 227 4936254 6664.2 3059 2972 740.3
D 2 250 1508023 2033.12 3059 2972 740.3
D 12 235 1370640 1847.54 3059 2972 740.3

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