ASTROSAT CZTI

Data Quality Report

Orbit 39169

Creation date: 2024-06-27T22:01:20.146735
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_054T02_9000005444_39169cztM0_level2.fits modeM0/AS1A12_054T02_9000005444_39169cztM0_level2_quad_clean.evt
Size (bytes)450,207,36087,180,480
Size429.4 MB 83.1 MB
Events in quadrant A2,904,386633,996
Events in quadrant B2,420,623643,103
Events in quadrant C2,799,139596,307
Events in quadrant D8,132,845398,605

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01175210
B01062110
C0114576
D02782947

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5249180.342922%
B524850.095274%
C5251561.066464%
D5243183434.979973%

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 7108 5253 6 6 0.08% 0.11%
B 7108 5253 1 1 0.01% 0.02%
C 7108 5254 38 38 0.53% 0.72%
D 7108 5252 1620 1620 22.79% 30.85%

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 422271 3472.82 603 592 121.4
A 13 248 120084 984.1 603 592 121.4
A 2 79 19533 155.99 603 592 121.4
B 0 213 39086 334.6 596 580 115.1
B 5 172 22222 188.06 596 580 115.1
B 12 111 14487 120.84 596 580 115.1
C 9 187 322637 2387.82 577 580 134.9
C 15 214 223010 1649.16 577 580 134.9
C 0 10 4343 27.9 577 580 134.9
D 12 235 2855680 23037.73 509 494 123.9
D 5 222 1293303 10431.33 509 494 123.9
D 13 171 1001565 8077.37 509 494 123.9

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