ASTROSAT CZTI

Data Quality Report

Orbit 00135

Creation date: 2024-06-27T13:56:50.479094
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/AS1P01_003T01_9000000002_00135cztM0_level2.evt modeM0/AS1P01_003T01_9000000002_00135cztM0_level2_quad_clean.evt
Size (bytes)688,645,44041,411,520
Size656.7 MB 39.5 MB
Events in quadrant A5,195,663234,884
Events in quadrant B5,180,416242,016
Events in quadrant C4,624,323240,096
Events in quadrant D5,567,470232,160

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0185080
B0184670
C0168260
D0196090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A432210.023137%
B4322100.231374%
C432250.115687%
D4322671.550208%

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 4323 4323 114 114 2.64% 2.64%
B 4323 4323 99 99 2.29% 2.29%
C 4323 4323 39 39 0.90% 0.90%
D 4323 4323 313 313 7.24% 7.24%

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 14 171 19668 83.19 1327 1294 220.9
A 14 187 10925 43.6 1327 1294 220.9
A 13 239 9782 38.43 1327 1294 220.9
B 8 236 84147 285.7 1286 1291 290.0
B 5 216 31257 103.33 1286 1291 290.0
B 0 236 21233 68.76 1286 1291 290.0
C 0 186 21136 60.29 1164 1204 330.6
C 3 32 10727 28.8 1164 1204 330.6
C 10 20 9744 25.83 1164 1204 330.6
D 12 207 195443 583.52 1245 1251 332.8
D 13 207 104808 311.17 1245 1251 332.8
D 13 223 67294 198.45 1245 1251 332.8

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