ASTROSAT CZTI

Data Quality Report

Orbit 30429

Creation date: 2024-06-27T20:15:08.876782
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_121T02_9000004378_30429cztM0_level2.evt modeM0/AS1A10_121T02_9000004378_30429cztM0_level2_quad_clean.evt
Size (bytes)585,368,640105,612,480
Size558.3 MB 100.7 MB
Events in quadrant A3,594,665687,206
Events in quadrant B5,662,664687,795
Events in quadrant C3,846,088674,285
Events in quadrant D4,143,875654,906

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151912
B0217452
C0158802
D0171895

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70891081.523487%
B70892323.272676%
C70892393.371421%
D70882653.738713%

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 9214 7091 1 1 0.01% 0.01%
B 9214 7090 1 1 0.01% 0.01%
C 9214 7089 3 3 0.03% 0.04%
D 9213 7090 172 172 1.87% 2.43%

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 0 13 32818 174.66 914 898 182.8
A 8 192 26417 139.63 914 898 182.8
A 13 254 13236 67.51 914 898 182.8
B 6 159 2021450 11636.6 904 881 173.6
B 0 229 46110 260.48 904 881 173.6
B 12 111 21094 116.41 904 881 173.6
C 14 238 147539 712.76 884 890 205.7
C 3 233 96725 465.79 884 890 205.7
C 15 208 58068 277.9 884 890 205.7
D 13 104 318097 1392.91 881 865 227.7
D 13 249 315763 1382.66 881 865 227.7
D 2 250 50716 218.89 881 865 227.7

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