ASTROSAT CZTI

Data Quality Report

Orbit 35459

Creation date: 2022-04-21T14:56:39.388448
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/AS1A11_095T06_9000005078_35459cztM0_level2.evt modeM0/AS1A11_095T06_9000005078_35459cztM0_level2_quad_clean.evt
Size (bytes)950,414,400162,057,600
Size906.4 MB 154.6 MB
Events in quadrant A5,264,4571,064,747
Events in quadrant B10,020,1111,014,305
Events in quadrant C6,611,7411,039,735
Events in quadrant D6,125,6511,009,027

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0350
C0350
D0350

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0231424
B0373843
C0265633
D0256313

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02300
B02300
C02300
D02300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11268190.168619%
B11268132611.767838%
C112683242.875399%
D112681941.721690%

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 16942 11272 0 0 0.00% 0.00%
B 16942 11272 980 980 5.78% 8.69%
C 16942 11272 245 245 1.45% 2.17%
D 16942 11272 170 170 1.00% 1.51%

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 219043 831.83 1298 1270 261.8
A 13 6 20029 71.65 1298 1270 261.8
A 13 254 16550 58.37 1298 1270 261.8
B 5 236 4197233 17671.29 1237 1202 237.4
B 4 251 387484 1626.8 1237 1202 237.4
B 5 200 207275 867.86 1237 1202 237.4
C 0 10 1160052 3986.3 1254 1263 290.7
C 15 214 453624 1556.15 1254 1263 290.7
C 0 207 100705 342.08 1254 1263 290.7
D 13 249 390988 1280.77 1258 1224 304.3
D 2 153 222874 728.35 1258 1224 304.3
D 8 195 180520 589.17 1258 1224 304.3

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