ASTROSAT CZTI

Data Quality Report

Orbit 39726

Creation date: 2024-06-27T22:08:16.730724
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/AS1A12_022T01_9000005494_39726cztM0_level2.fits modeM0/AS1A12_022T01_9000005494_39726cztM0_level2_quad_clean.evt
Size (bytes)401,863,68094,746,240
Size383.2 MB 90.4 MB
Events in quadrant A3,430,242629,256
Events in quadrant B3,071,422653,894
Events in quadrant C4,229,435621,618
Events in quadrant D3,702,501566,615

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139332
B0130401
C0163851
D0150451

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56901552.724077%
B5690591.036907%
C56901182.073814%
D56902093.673111%

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 8914 5692 98 98 1.10% 1.72%
B 8914 5692 27 27 0.30% 0.47%
C 8914 5692 94 94 1.05% 1.65%
D 8914 5692 176 176 1.97% 3.09%

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 457244 3623.49 619 605 126.0
A 15 174 412716 3270.15 619 605 126.0
A 13 248 130381 1029.79 619 605 126.0
B 5 172 482302 3956.43 620 603 121.8
B 5 255 89201 727.7 620 603 121.8
B 0 190 43044 348.59 620 603 121.8
C 15 208 1145415 8083.17 605 608 141.6
C 9 187 450864 3179.13 605 608 141.6
C 15 214 234180 1649.19 605 608 141.6
D 2 250 555531 3764.18 600 583 147.4
D 12 227 373059 2526.49 600 583 147.4
D 13 171 146766 991.55 600 583 147.4

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