ASTROSAT CZTI

Data Quality Report

Orbit 21507

Creation date: 2024-06-27T18:28:44.001961
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_141T01_9000003174_21507cztM0_level2.evt modeM0/AS1T03_141T01_9000003174_21507cztM0_level2_quad_clean.evt
Size (bytes)484,323,84069,724,800
Size461.9 MB 66.5 MB
Events in quadrant A3,285,065419,025
Events in quadrant B3,611,326428,033
Events in quadrant C3,399,789418,777
Events in quadrant D3,941,392402,762

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135390
B0146290
C0139690
D0158440

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6344550.866961%
B63441001.576293%
C6344921.450189%
D6344941.481715%

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 7569 6345 0 0 0.00% 0.00%
B 7569 6345 19 19 0.25% 0.30%
C 7569 6345 0 0 0.00% 0.00%
D 7569 6345 23 23 0.30% 0.36%

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 11219 61.2 851 836 169.6
A 0 226 7300 38.1 851 836 169.6
A 3 137 6485 33.3 851 836 169.6
B 3 64 112368 705.57 854 836 158.1
B 0 230 74397 465.36 854 836 158.1
B 0 189 33563 207.04 854 836 158.1
C 14 238 134385 695.55 831 840 192.0
C 0 239 21155 105.81 831 840 192.0
C 3 233 6029 27.03 831 840 192.0
D 14 35 283223 1416.19 833 812 199.4
D 1 52 251814 1258.68 833 812 199.4
D 13 174 94501 469.82 833 812 199.4

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