ASTROSAT CZTI

Data Quality Report

Orbit 50364

Creation date: 2025-01-20T09:22:20.459363
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/AS1C09_003T01_9000006442_50364cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50364cztM0_level2_quad_clean.evt
Size (bytes)774,227,52077,209,920
Size738.4 MB 73.6 MB
Events in quadrant A4,048,363583,384
Events in quadrant B8,000,721508,371
Events in quadrant C6,157,409510,989
Events in quadrant D9,973,707302,527

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160281
B0280841
C0225962
D0338291

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61912644.264255%
B6191164926.635439%
C619182613.341948%
D6191293747.439832%

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 7106 6192 106 106 1.49% 1.71%
B 7106 6192 1072 1072 15.09% 17.31%
C 7106 6192 577 577 8.12% 9.32%
D 7106 6192 2429 2429 34.18% 39.23%

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 8 248 258382 1550.52 669 652 166.2
A 4 3 193735 1161.6 669 652 166.2
A 3 14 145718 872.73 669 652 166.2
B 4 170 3798687 29204.51 613 591 130.1
B 12 0 420454 3228.43 613 591 130.1
B 5 172 355127 2726.11 613 591 130.1
C 15 230 1091271 6377.47 616 612 171.0
C 0 208 673750 3936.07 616 612 171.0
C 10 171 456923 2668.21 616 612 171.0
D 7 61 3035796 21968.6 494 477 138.2
D 3 12 2392488 17312.56 494 477 138.2
D 7 126 595194 4304.36 494 477 138.2

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