ASTROSAT CZTI

Data Quality Report

Orbit 41866

Creation date: 2024-06-27T22:33:48.535791
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_001T11_9000005710_41866cztM0_level2.fits modeM0/AS1C07_001T11_9000005710_41866cztM0_level2_quad_clean.evt
Size (bytes)386,268,48084,890,880
Size368.4 MB 81.0 MB
Events in quadrant A3,713,428574,057
Events in quadrant B2,619,689608,827
Events in quadrant C3,071,242543,368
Events in quadrant D4,512,954500,525

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140892
B0109992
C0119102
D0167132

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0310
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49002935.979592%
B4900410.836735%
C49002655.408163%
D49004398.959184%

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 7023 4901 197 197 2.81% 4.02%
B 7023 4901 24 24 0.34% 0.49%
C 7023 4901 266 266 3.79% 5.43%
D 7023 4901 456 456 6.49% 9.30%

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 14 24 1033986 9217.42 550 541 112.1
A 10 83 534211 4759.87 550 541 112.1
A 13 248 8165 68.0 550 541 112.1
B 5 255 218248 2090.48 550 536 104.1
B 0 245 82509 787.11 550 536 104.1
B 0 156 47025 446.39 550 536 104.1
C 0 10 869833 7294.69 513 515 119.2
C 15 214 192665 1612.38 513 515 119.2
C 13 61 3541 25.39 513 515 119.2
D 12 79 1975157 15337.62 527 512 128.7
D 13 249 140499 1087.32 527 512 128.7
D 2 249 94161 727.4 527 512 128.7

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