ASTROSAT CZTI

Data Quality Report

Orbit 09493

Creation date: 2024-06-27T15:46:47.350292
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/AS1A03_005T01_9000001348_09493cztM0_level2.evt modeM0/AS1A03_005T01_9000001348_09493cztM0_level2_quad_clean.evt
Size (bytes)1,594,457,280255,101,760
Size1.5 GB 243.3 MB
Events in quadrant A12,540,5611,567,642
Events in quadrant B9,695,1081,588,727
Events in quadrant C11,344,9841,572,204
Events in quadrant D13,272,7381,533,871

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0511775
B0433573
C0484843
D0540715

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04320
B04320
C04320
D04320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A212592161.016040%
B212601510.710254%
C212605282.483537%
D212593871.820405%

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 22815 21263 12 12 0.05% 0.06%
B 22815 21263 0 0 0.00% 0.00%
C 22815 21263 289 289 1.27% 1.36%
D 22815 21263 260 260 1.14% 1.22%

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 8 5 2384449 4752.72 2460 2410 501.2
A 1 162 354258 702.02 2460 2410 501.2
A 1 178 130845 256.26 2460 2410 501.2
B 4 173 129045 270.57 2463 2403 468.1
B 12 111 54904 112.17 2463 2403 468.1
B 11 111 44834 90.65 2463 2403 468.1
C 4 254 1866282 3391.2 2382 2399 549.6
C 9 68 181836 326.47 2382 2399 549.6
C 13 61 17535 27.54 2382 2399 549.6
D 8 195 1898251 3183.66 2375 2317 595.5
D 1 52 834339 1397.13 2375 2317 595.5
D 2 136 607400 1016.06 2375 2317 595.5

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