ASTROSAT CZTI

Data Quality Report

Orbit 21392

Creation date: 2024-06-27T18:27:14.115568
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/AS1C04_001T01_9000003156_21392cztM0_level2.evt modeM0/AS1C04_001T01_9000003156_21392cztM0_level2_quad_clean.evt
Size (bytes)941,132,160183,726,720
Size897.5 MB 175.2 MB
Events in quadrant A6,010,9161,227,399
Events in quadrant B5,697,1811,239,003
Events in quadrant C9,984,1471,113,940
Events in quadrant D6,007,2031,163,106

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025398145
B024764150
C038125298
D026154188

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0122

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02475
B02442
C02442
D02455

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11867820.690992%
B11870630.530750%
C1186510368.731563%
D118681321.112235%

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 15670 11869 27 27 0.17% 0.23%
B 15671 11872 7 7 0.04% 0.06%
C 15671 11868 544 544 3.47% 4.58%
D 15671 11871 58 58 0.37% 0.49%

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 12 96 265807 949.04 1406 1379 278.6
A 5 168 233612 833.49 1406 1379 278.6
A 15 174 79874 281.72 1406 1379 278.6
B 0 230 46688 175.74 1391 1356 257.9
B 0 228 45019 169.27 1391 1356 257.9
B 0 190 37940 141.83 1391 1356 257.9
C 3 233 4769108 16106.33 1285 1292 296.0
C 14 238 205265 689.05 1285 1292 296.0
C 13 61 8914 25.75 1285 1292 296.0
D 12 235 365769 1128.26 1349 1314 323.0
D 13 174 127340 390.14 1349 1314 323.0
D 13 153 94888 289.68 1349 1314 323.0

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