ASTROSAT CZTI

Data Quality Report

Orbit 17841

Creation date: 2024-06-27T17:41:56.951575
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/AS1A05_101T06_9000002656_17841cztM0_level2.evt modeM0/AS1A05_101T06_9000002656_17841cztM0_level2_quad_clean.evt
Size (bytes)175,904,64032,014,080
Size167.8 MB 30.5 MB
Events in quadrant A1,212,263202,604
Events in quadrant B1,324,371205,460
Events in quadrant C1,214,074197,813
Events in quadrant D1,411,421190,598

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050031
B053451
C049841
D057261

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2390381.589958%
B2390451.882845%
C2390401.673640%
D2389753.139389%

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 3245 2391 0 0 0.00% 0.00%
B 3245 2391 5 5 0.15% 0.21%
C 3245 2391 0 0 0.00% 0.00%
D 3244 2390 36 36 1.11% 1.51%

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 4860 69.98 313 306 65.1
A 0 226 2848 39.06 313 306 65.1
A 3 137 2378 31.84 313 306 65.1
B 7 220 36136 580.04 309 301 61.8
B 4 216 20934 333.97 309 301 61.8
B 0 189 20186 321.86 309 301 61.8
C 14 238 45598 637.19 296 297 71.1
C 3 233 6408 85.96 296 297 71.1
C 5 218 3459 44.48 296 297 71.1
D 7 238 159015 2082.63 301 293 76.2
D 10 70 77077 1007.5 301 293 76.2
D 7 38 12845 164.7 301 293 76.2

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