ASTROSAT CZTI

Data Quality Report

Orbit 23294

Creation date: 2024-06-27T18:52:27.723450
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/AS1C05_012T03_9000003442_23294cztM0_level2.evt modeM0/AS1C05_012T03_9000003442_23294cztM0_level2_quad_clean.evt
Size (bytes)1,303,637,760322,381,440
Size1.2 GB 307.4 MB
Events in quadrant A7,725,5372,200,677
Events in quadrant B8,155,0932,224,036
Events in quadrant C8,275,5642,155,985
Events in quadrant D14,170,3262,006,356

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03460
B03460
C03460
D03460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0348714
B0358033
C0357703
D0539593

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17087850.497454%
B170872011.176333%
C170882441.427903%
D1708816179.462781%

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 19007 17090 1 1 0.01% 0.01%
B 19007 17090 55 55 0.29% 0.32%
C 19008 17091 8 8 0.04% 0.05%
D 19008 17090 1366 1366 7.19% 7.99%

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 26611 61.86 2003 1959 398.5
A 3 137 17688 39.47 2003 1959 398.5
A 0 226 17362 38.65 2003 1959 398.5
B 14 207 146660 388.07 1993 1942 372.9
B 0 229 104100 273.95 1993 1942 372.9
B 5 172 50742 130.86 1993 1942 372.9
C 14 238 307117 681.73 1941 1949 447.6
C 10 9 131739 289.94 1941 1949 447.6
C 0 239 124912 274.69 1941 1949 447.6
D 1 52 6495776 14295.18 1877 1820 454.3
D 7 238 252108 550.96 1877 1820 454.3
D 1 239 181487 395.5 1877 1820 454.3

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