ASTROSAT CZTI

Data Quality Report

Orbit 38861

Creation date: 2024-06-27T21:57:22.563547
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/AS1A12_077T06_9000005408_38861cztM0_level2.fits modeM0/AS1A12_077T06_9000005408_38861cztM0_level2_quad_clean.evt
Size (bytes)638,570,880171,754,560
Size609.0 MB 163.8 MB
Events in quadrant A5,446,9871,164,614
Events in quadrant B5,576,6481,172,741
Events in quadrant C4,981,2171,130,095
Events in quadrant D6,817,0591,004,837

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02140
B02140
C02140
D02140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0223513
B0234292
C0211632
D0272452

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10514190.180711%
B105142572.444360%
C1051420.019022%
D105144834.593875%

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 13350 10516 8 8 0.06% 0.08%
B 13350 10516 163 163 1.22% 1.55%
C 13350 10516 0 0 0.00% 0.00%
D 13350 10516 402 402 3.01% 3.82%

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 696168 2870.45 1188 1164 242.1
A 13 248 90858 370.45 1188 1164 242.1
A 9 143 48859 196.99 1188 1164 242.1
B 4 171 596256 2621.72 1171 1140 227.0
B 15 85 94600 411.73 1171 1140 227.0
B 4 251 72346 313.69 1171 1140 227.0
C 15 214 428736 1578.14 1158 1160 270.9
C 14 254 12905 43.35 1158 1160 270.9
C 3 233 8220 26.06 1158 1160 270.9
D 2 250 774016 2793.91 1132 1098 276.6
D 2 249 434356 1566.12 1132 1098 276.6
D 13 249 394034 1420.37 1132 1098 276.6

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