ASTROSAT CZTI

Data Quality Report

Orbit 50960

Creation date: 2025-02-28T21:31:49.077863
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/AS1C07_001T02_9000006452_50960cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_50960cztM0_level2_quad_clean.evt
Size (bytes)719,688,96077,031,360
Size686.3 MB 73.5 MB
Events in quadrant A7,497,536482,369
Events in quadrant B8,988,634410,903
Events in quadrant C4,208,018526,376
Events in quadrant D5,470,433483,277

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0265071
B0309941
C0166411
D0204441

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6147134521.880592%
B6148246040.013012%
C61474327.027818%
D61475919.614446%

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 6922 6148 1120 1120 16.18% 18.22%
B 6922 6148 1994 1994 28.81% 32.43%
C 6922 6148 259 259 3.74% 4.21%
D 6922 6148 419 419 6.05% 6.82%

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 12 80 2134604 13941.4 616 599 153.1
A 8 43 1125301 7347.65 616 599 153.1
A 14 254 1069549 6983.42 616 599 153.1
B 5 236 6271211 58002.85 511 494 108.1
B 8 128 186400 1719.59 511 494 108.1
B 4 206 129151 1190.05 511 494 108.1
C 1 29 526978 3066.67 624 617 171.6
C 13 3 302432 1758.43 624 617 171.6
C 3 233 131334 761.58 624 617 171.6
D 8 176 869400 5084.89 610 588 170.9
D 3 12 685006 4005.69 610 588 170.9
D 10 181 438427 2562.54 610 588 170.9

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