ASTROSAT CZTI

Data Quality Report

Orbit 37494

Creation date: 2024-06-27T21:40:46.164314
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/AS1C07_001T11_9000005326_37494cztM0_level2.evt modeM0/AS1C07_001T11_9000005326_37494cztM0_level2_quad_clean.evt
Size (bytes)337,147,20075,081,600
Size321.5 MB 71.6 MB
Events in quadrant A2,133,399502,940
Events in quadrant B2,457,892511,785
Events in quadrant C2,482,900496,044
Events in quadrant D2,859,334476,244

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A088861
B0101191
C099431
D0113441

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4062300.738552%
B40621273.126539%
C40621543.791236%
D40621664.086657%

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 4062 4062 18 18 0.44% 0.44%
B 4062 4062 100 100 2.46% 2.46%
C 4062 4062 151 151 3.72% 3.72%
D 4062 4062 148 148 3.64% 3.64%

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 183107 2010.13 449 441 90.9
A 13 248 144183 1581.79 449 441 90.9
A 12 189 30596 331.84 449 441 90.9
B 5 172 315178 3737.97 443 431 84.2
B 15 35 208933 2476.19 443 431 84.2
B 0 229 103091 1219.2 443 431 84.2
C 0 207 255870 2577.52 427 428 99.1
C 14 128 190185 1914.73 427 428 99.1
C 15 214 169540 1706.42 427 428 99.1
D 13 249 439811 4235.16 428 415 103.7
D 13 171 428276 4123.98 428 415 103.7
D 2 249 156609 1505.49 428 415 103.7

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