ASTROSAT CZTI

Data Quality Report

Orbit 26729

Creation date: 2024-06-27T19:32:12.623665
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/AS1T03_223T01_9000003850_26729cztM0_level2.evt modeM0/AS1T03_223T01_9000003850_26729cztM0_level2_quad_clean.evt
Size (bytes)1,658,859,840241,951,680
Size1.5 GB 230.7 MB
Events in quadrant A9,079,7941,563,395
Events in quadrant B19,001,3871,470,396
Events in quadrant C8,927,7831,554,692
Events in quadrant D12,009,5091,490,581

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0392300
B0685900
C0383490
D0481910

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A181041810.999779%
B18105287315.868545%
C181042601.436147%
D181048284.573575%

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 20214 18107 79 79 0.39% 0.44%
B 20215 18108 2380 2380 11.77% 13.14%
C 20214 18107 24 24 0.12% 0.13%
D 20214 18107 547 547 2.71% 3.02%

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 740312 1704.88 2161 2113 433.0
A 13 254 28017 59.83 2161 2113 433.0
A 3 137 20850 43.27 2161 2113 433.0
B 0 189 10427197 26844.0 2055 2002 388.4
B 10 251 234027 597.44 2055 2002 388.4
B 3 112 163477 415.78 2055 2002 388.4
C 14 238 331132 671.82 2085 2101 489.8
C 4 254 283435 574.43 2085 2101 489.8
C 3 233 82842 164.86 2085 2101 489.8
D 1 52 2913854 5578.86 2061 2012 521.9
D 2 250 609558 1164.01 2061 2012 521.9
D 7 80 457346 872.38 2061 2012 521.9

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