ASTROSAT CZTI

Data Quality Report

Orbit 43476

Creation date: 2024-06-27T22:52:25.023328
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_018T01_9000005874_43476cztM0_level2.fits modeM0/AS1A12_018T01_9000005874_43476cztM0_level2_quad_clean.evt
Size (bytes)428,598,72081,449,280
Size408.7 MB 77.7 MB
Events in quadrant A6,835,756431,233
Events in quadrant B2,602,490588,282
Events in quadrant C2,377,767569,473
Events in quadrant D3,645,743513,640

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0239516
B0114002
C0105142
D0143912

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0350
D0350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5185163631.552555%
B5185240.462874%
C518530.057859%
D51851102.121504%

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 7278 5186 1198 1198 16.46% 23.10%
B 7278 5186 18 18 0.25% 0.35%
C 7278 5186 2 2 0.03% 0.04%
D 7278 5186 107 107 1.47% 2.06%

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 15 222 4140843 41659.02 485 474 99.4
A 10 83 519678 5224.06 485 474 99.4
A 13 248 231703 2326.55 485 474 99.4
B 0 190 217237 2062.45 545 530 105.1
B 0 245 88605 838.23 545 530 105.1
B 5 255 40587 381.23 545 530 105.1
C 15 214 224951 1787.68 537 538 125.5
C 3 233 34703 272.16 537 538 125.5
C 0 207 11330 85.97 537 538 125.5
D 2 16 612297 4752.07 527 511 128.7
D 1 52 427831 3319.22 527 511 128.7
D 7 96 148076 1146.21 527 511 128.7

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