ASTROSAT CZTI

Data Quality Report

Orbit 43459

Creation date: 2024-06-27T22:52:12.960492
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_43459cztM0_level2.fits modeM0/AS1A12_018T01_9000005874_43459cztM0_level2_quad_clean.evt
Size (bytes)337,838,40088,508,160
Size322.2 MB 84.4 MB
Events in quadrant A3,298,175585,769
Events in quadrant B2,660,427619,574
Events in quadrant C2,412,329592,656
Events in quadrant D3,745,160531,315

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129482
B0112922
C0102832
D0145752

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0290
C0290
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5005861.718282%
B5005230.459540%
C500530.059940%
D50041312.617906%

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 7038 5006 73 73 1.04% 1.46%
B 7038 5006 11 11 0.16% 0.22%
C 7038 5006 0 0 0.00% 0.00%
D 7037 5005 130 130 1.85% 2.60%

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 568512 5081.97 546 535 111.8
A 15 237 408558 3650.78 546 535 111.8
A 15 222 187578 1673.56 546 535 111.8
B 0 245 288617 2775.02 556 542 103.8
B 0 189 72309 691.33 556 542 103.8
B 0 186 53093 506.22 556 542 103.8
C 15 214 219813 1718.07 551 554 127.6
C 3 233 35018 270.05 551 554 127.6
C 13 61 3698 24.64 551 554 127.6
D 1 52 808874 6151.0 537 522 131.4
D 2 16 289462 2198.63 537 522 131.4
D 2 249 231223 1755.48 537 522 131.4

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