ASTROSAT CZTI

Data Quality Report

Orbit 16081

Creation date: 2024-06-27T17:17:43.744590
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/AS1T02_110T01_9000002376_16081cztM0_level2.evt modeM0/AS1T02_110T01_9000002376_16081cztM0_level2_quad_clean.evt
Size (bytes)175,118,40033,289,920
Size167.0 MB 31.7 MB
Events in quadrant A1,264,424217,835
Events in quadrant B1,343,184219,067
Events in quadrant C1,209,901205,882
Events in quadrant D1,333,403204,887

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050261
B054020
C048380
D053390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2213974.383190%
B2213733.298690%
C2213873.931315%
D2213763.434252%

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 3519 2214 19 19 0.54% 0.86%
B 3519 2214 0 0 0.00% 0.00%
C 3519 2214 1 1 0.03% 0.05%
D 3519 2214 18 18 0.51% 0.81%

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 15 239 53883 829.25 309 302 64.6
A 3 80 12438 187.82 309 302 64.6
A 9 143 6924 102.49 309 302 64.6
B 7 220 72469 1210.47 307 299 59.6
B 0 189 15618 256.94 307 299 59.6
B 4 216 15072 247.78 307 299 59.6
C 14 238 44543 641.11 292 294 69.0
C 3 233 11206 158.1 292 294 69.0
C 0 207 10910 153.81 292 294 69.0
D 5 222 112536 1497.79 303 293 74.9
D 12 218 26208 345.81 303 293 74.9
D 7 38 19774 259.96 303 293 74.9

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