ASTROSAT CZTI

Data Quality Report

Orbit 34471

Creation date: 2022-02-12T06:17:15.582227
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/AS1A10_071T13_9000004922_34471cztM0_level2.evt modeM0/AS1A10_071T13_9000004922_34471cztM0_level2_quad_clean.evt
Size (bytes)368,801,28058,708,800
Size351.7 MB 56.0 MB
Events in quadrant A2,152,445379,799
Events in quadrant B2,153,145389,905
Events in quadrant C2,178,028392,880
Events in quadrant D4,407,986327,770

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151
B0152
C0150
D0162

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012236
B012444
C012335
D012139

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133063966
B0138244539
C0130734016
D02635010675

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4166691.656265%
B4171511.222728%
C424050.117925%
D36703349.100817%

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 7338 4770 59 59 0.80% 1.24%
B 7337 4756 20 20 0.27% 0.42%
C 7338 4812 1 1 0.01% 0.02%
D 7338 4268 321 321 4.37% 7.52%

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 15 169 252892 2639.21 469 461 95.6
A 9 143 48476 502.0 469 461 95.6
A 10 83 22976 235.4 469 461 95.6
B 5 172 165672 1796.06 470 458 92.0
B 5 255 72991 788.51 470 458 92.0
B 0 229 44305 476.67 470 458 92.0
C 15 214 178701 1610.14 467 472 110.7
C 14 67 130931 1178.58 467 472 110.7
C 0 10 34453 306.99 467 472 110.7
D 7 223 1288323 13671.43 382 372 94.2
D 10 203 632144 6706.18 382 372 94.2
D 8 195 414559 4396.54 382 372 94.2

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