ASTROSAT CZTI

Data Quality Report

Orbit 25072

Creation date: 2024-06-27T19:13:30.032353
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_206T01_9000003672_25072cztM0_level2.evt modeM0/AS1T03_206T01_9000003672_25072cztM0_level2_quad_clean.evt
Size (bytes)546,595,20072,843,840
Size521.3 MB 69.5 MB
Events in quadrant A3,318,231454,083
Events in quadrant B3,456,003466,313
Events in quadrant C3,390,523432,269
Events in quadrant D5,940,431391,178

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137382
B0140402
C0139242
D0223162

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6618210.317316%
B6618410.619523%
C6618550.831067%
D66185297.993351%

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 7843 6619 0 0 0.00% 0.00%
B 7843 6619 0 0 0.00% 0.00%
C 7843 6619 0 0 0.00% 0.00%
D 7843 6619 294 294 3.75% 4.44%

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 11177 60.17 860 843 171.7
A 3 137 7450 38.47 860 843 171.7
A 0 226 7326 37.75 860 843 171.7
B 10 249 25398 150.38 866 848 163.3
B 12 111 19413 113.72 866 848 163.3
B 0 229 17223 100.3 866 848 163.3
C 14 238 131800 688.28 818 824 190.3
C 7 247 25045 127.28 818 824 190.3
C 2 16 23943 121.49 818 824 190.3
D 9 35 1365081 7103.47 797 776 192.1
D 8 195 641418 3335.6 797 776 192.1
D 1 52 505118 2625.94 797 776 192.1

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