ASTROSAT CZTI

Data Quality Report

Orbit 35693

Creation date: 2022-05-06T11:42:58.022968
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/AS1A09_029T04_9000005110_35693cztM0_level2.evt modeM0/AS1A09_029T04_9000005110_35693cztM0_level2_quad_clean.evt
Size (bytes)185,224,32046,630,080
Size176.6 MB 44.5 MB
Events in quadrant A1,315,882312,612
Events in quadrant B1,292,004316,229
Events in quadrant C1,246,825310,744
Events in quadrant D1,585,015294,887

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A054441
B054571
C052741
D063851

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A246560.243408%
B2465371.501014%
C2465200.811359%
D2465843.407708%

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 2465 2465 0 0 0.00% 0.00%
B 2465 2465 30 30 1.22% 1.22%
C 2465 2465 14 14 0.57% 0.57%
D 2465 2465 64 64 2.60% 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 15 169 109370 1795.21 290 284 60.8
A 10 83 72423 1187.18 290 284 60.8
A 13 6 9470 151.17 290 284 60.8
B 5 172 100552 1795.34 282 275 55.9
B 5 255 45497 809.65 282 275 55.9
B 15 85 15961 280.84 282 275 55.9
C 15 214 105504 1616.74 275 276 65.1
C 0 10 62912 962.35 275 276 65.1
C 4 254 4586 66.22 275 276 65.1
D 2 250 246169 3546.42 278 269 69.3
D 13 249 136077 1958.65 278 269 69.3
D 10 118 93062 1338.28 278 269 69.3

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