ASTROSAT CZTI

Data Quality Report

Orbit 02985

Creation date: 2024-06-27T14:23:05.449332
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/AS1G05_238T05_9000000418_02985cztM0_level2.evt modeM0/AS1G05_238T05_9000000418_02985cztM0_level2_quad_clean.evt
Size (bytes)349,263,36052,315,200
Size333.1 MB 49.9 MB
Events in quadrant A2,682,908308,973
Events in quadrant B2,787,564312,090
Events in quadrant C2,154,332311,050
Events in quadrant D2,614,956303,874

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114623
B0118002
C0101562
D0113292

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4961881.773836%
B49611042.096352%
C496180.161258%
D4961430.866761%

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 7116 4962 75 75 1.05% 1.51%
B 7116 4962 81 81 1.14% 1.63%
C 7116 4962 2 2 0.03% 0.04%
D 7116 4962 35 35 0.49% 0.71%

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 9 440158 4193.25 508 496 104.8
A 0 50 167670 1594.41 508 496 104.8
A 0 31 40492 381.46 508 496 104.8
B 3 11 254476 2511.21 522 510 101.1
B 2 249 208464 2056.25 522 510 101.1
B 0 219 63111 619.0 522 510 101.1
C 6 80 51479 423.1 506 509 120.5
C 0 219 45238 371.3 506 509 120.5
C 1 16 40237 329.78 506 509 120.5
D 13 114 207473 1666.49 498 487 124.2
D 1 31 111330 892.42 498 487 124.2
D 13 239 73694 589.41 498 487 124.2

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