ASTROSAT CZTI

Data Quality Report

Orbit 00145

Creation date: 2024-06-27T13:56:58.831618
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/AS1P01_140T01_9000000004_00145cztM0_level2.evt modeM0/AS1P01_140T01_9000000004_00145cztM0_level2_quad_clean.evt
Size (bytes)762,399,36051,425,280
Size727.1 MB 49.0 MB
Events in quadrant A5,607,696308,448
Events in quadrant B5,747,113316,925
Events in quadrant C5,179,418308,812
Events in quadrant D6,242,136292,247

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0971
D0960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0182
C0160
D0171

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02001212
B02039012
C0187359
D02189716

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A470460.127551%
B4703150.318945%
C470430.063776%
D47041924.081633%

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 6295 4706 139 139 2.21% 2.95%
B 6295 4706 129 129 2.05% 2.74%
C 6295 4706 49 49 0.78% 1.04%
D 6295 4706 362 362 5.75% 7.69%

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 0 134 57829 238.81 1420 1389 236.3
A 0 86 11070 40.96 1420 1389 236.3
A 13 9 9351 33.69 1420 1389 236.3
B 10 199 107980 340.42 1419 1424 313.0
B 8 236 73022 228.74 1419 1424 313.0
B 0 212 34562 105.87 1419 1424 313.0
C 3 32 34296 91.69 1289 1339 359.4
C 8 229 30981 82.46 1289 1339 359.4
C 2 192 26535 70.1 1289 1339 359.4
D 7 66 99569 262.3 1382 1337 374.5
D 7 68 88877 233.75 1382 1337 374.5
D 10 229 49610 128.9 1382 1337 374.5

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