ASTROSAT CZTI

Data Quality Report

Orbit 34321

Creation date: 2022-02-04T10:58:57.476520
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_012T02_9000004898_34321cztM0_level2.evt modeM0/AS1A05_012T02_9000004898_34321cztM0_level2_quad_clean.evt
Size (bytes)287,449,92043,577,280
Size274.1 MB 41.6 MB
Events in quadrant A1,098,725309,242
Events in quadrant B1,267,911320,120
Events in quadrant C1,727,110300,636
Events in quadrant D4,462,402231,420

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A045921
B051371
C065511
D0147541

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A217610.045956%
B2176120.551471%
C21761788.180147%
D2176120455.330882%

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 4208 2177 0 0 0.00% 0.00%
B 4208 2177 4 4 0.10% 0.18%
C 4208 2177 128 128 3.04% 5.88%
D 4208 2176 1182 1182 28.09% 54.32%

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 14249 246.59 279 274 56.7
A 13 6 5078 84.77 279 274 56.7
A 13 254 3069 49.32 279 274 56.7
B 5 31 32575 605.24 282 277 53.4
B 5 172 29240 542.74 282 277 53.4
B 0 199 29112 540.34 282 277 53.4
C 14 254 446126 7083.55 272 275 62.9
C 0 10 101429 1607.11 272 275 62.9
C 15 214 88873 1407.62 272 275 62.9
D 12 235 1729489 30990.06 225 219 55.8
D 12 227 988168 17704.92 225 219 55.8
D 8 195 275613 4935.31 225 219 55.8

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