ASTROSAT CZTI

Data Quality Report

Orbit 42979

Creation date: 2024-06-27T22:46:29.793036
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/AS1T05_148T01_9000005838_42979cztM0_level2.fits modeM0/AS1T05_148T01_9000005838_42979cztM0_level2_quad_clean.evt
Size (bytes)586,857,600102,574,080
Size559.7 MB 97.8 MB
Events in quadrant A3,488,665886,407
Events in quadrant B10,582,454263,929
Events in quadrant C3,016,059857,206
Events in quadrant D4,224,624728,114

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0290
C0290
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139452
B0351112
C0121962
D0160242

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5296661.246224%
B5295385772.842304%
C5295190.358829%
D52953666.912181%

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 7119 5297 34 34 0.48% 0.64%
B 7118 5296 2983 2983 41.91% 56.33%
C 7118 5296 16 16 0.22% 0.30%
D 7118 5296 354 354 4.97% 6.68%

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 10 83 585235 3549.02 706 691 164.7
A 15 237 148483 897.31 706 691 164.7
A 15 222 15200 88.09 706 691 164.7
B 4 81 8513251 95285.36 395 385 89.3
B 4 171 388708 4346.54 395 385 89.3
B 0 186 63995 711.99 395 385 89.3
C 15 214 216921 1193.78 681 684 181.1
C 14 254 119970 658.54 681 684 181.1
C 7 173 8968 45.73 681 684 181.1
D 13 249 1054404 5705.65 662 636 184.7
D 1 52 225309 1216.5 662 636 184.7
D 12 6 109998 592.14 662 636 184.7

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