ASTROSAT CZTI

Data Quality Report

Orbit 16467

Creation date: 2024-06-27T17:23:13.016425
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_008T01_9000002434_16467cztM0_level2.evt modeM0/AS1C04_008T01_9000002434_16467cztM0_level2_quad_clean.evt
Size (bytes)781,176,960160,957,440
Size745.0 MB 153.5 MB
Events in quadrant A5,858,1191,046,599
Events in quadrant B5,876,9131,066,212
Events in quadrant C5,454,6761,025,352
Events in quadrant D5,743,959996,094

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0243043
B0241792
C0227302
D0242662

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02160
B02160
C02160
D02160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A107081040.971236%
B107081321.232723%
C107081351.260740%
D10708950.887187%

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 12654 10709 22 22 0.17% 0.21%
B 12654 10709 21 21 0.17% 0.20%
C 12654 10709 2 2 0.02% 0.02%
D 12654 10709 30 30 0.24% 0.28%

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 15 174 747275 2772.58 1328 1304 269.1
A 0 226 11801 39.01 1328 1304 269.1
A 12 194 9514 30.51 1328 1304 269.1
B 4 48 223837 875.16 1333 1303 254.3
B 15 35 172212 672.13 1333 1303 254.3
B 4 173 84020 325.3 1333 1303 254.3
C 14 238 198596 655.22 1283 1297 301.1
C 3 233 141980 467.2 1283 1297 301.1
C 7 247 102521 336.16 1283 1297 301.1
D 12 110 382615 1201.98 1296 1264 317.3
D 12 218 205501 643.74 1296 1264 317.3
D 13 248 117563 366.56 1296 1264 317.3

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