ASTROSAT CZTI

Data Quality Report

Orbit 42763

Creation date: 2024-06-27T22:43:56.612641
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/AS1A05_013T01_9000005822_42763cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42763cztM0_level2_quad_clean.evt
Size (bytes)348,120,00086,863,680
Size332.0 MB 82.8 MB
Events in quadrant A3,762,036567,771
Events in quadrant B2,763,545614,602
Events in quadrant C2,616,050593,767
Events in quadrant D3,358,474506,673

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142272
B0112742
C0106822
D0134012

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0340
C0340
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49544469.002826%
B4954741.493742%
C4954220.444086%
D49543907.872426%

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 6956 4955 356 356 5.12% 7.18%
B 6956 4955 55 55 0.79% 1.11%
C 6956 4955 21 21 0.30% 0.42%
D 6956 4955 370 370 5.32% 7.47%

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 13 248 1057204 9171.7 558 548 115.2
A 10 83 519731 4506.47 558 548 115.2
A 12 189 15492 129.71 558 548 115.2
B 0 229 359295 3257.87 571 556 110.1
B 5 172 45185 405.3 571 556 110.1
B 0 245 41760 374.19 571 556 110.1
C 15 214 205032 1562.81 561 565 130.8
C 14 254 191454 1459.03 561 565 130.8
C 3 233 20762 154.37 561 565 130.8
D 12 233 905834 6885.76 536 521 131.5
D 12 6 76520 578.04 536 521 131.5
D 12 217 66498 501.82 536 521 131.5

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