ASTROSAT CZTI

Data Quality Report

Orbit 33977

Creation date: 2024-06-27T20:54:59.299466
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/AS1A11_046T07_9000004862_33977cztM0_level2.evt modeM0/AS1A11_046T07_9000004862_33977cztM0_level2_quad_clean.evt
Size (bytes)252,938,88022,098,240
Size241.2 MB 21.1 MB
Events in quadrant A2,568,9701,015
Events in quadrant B1,598,666171,333
Events in quadrant C1,447,445173,729
Events in quadrant D1,892,985162,795

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A092002
B060611
C056071
D070481

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2199214797.635289%
B21991406.366530%
C2199582.637563%
D2199984.456571%

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 3783 2199 221 221 5.84% 10.05%
B 3783 2200 102 102 2.70% 4.64%
C 3783 2200 45 45 1.19% 2.05%
D 3783 2200 67 67 1.77% 3.05%

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 15 169 2500148 459095.59 17 17 5.4
A 10 83 426 75.1 17 17 5.4
A 13 6 339 59.13 17 17 5.4
B 5 172 445598 8390.05 265 258 53.1
B 0 182 35770 669.03 265 258 53.1
B 0 189 25583 477.11 265 258 53.1
C 0 10 156926 2524.11 262 265 62.1
C 4 254 103788 1667.95 262 265 62.1
C 15 214 96941 1557.64 262 265 62.1
D 8 195 438200 6654.57 263 255 65.8
D 13 249 156699 2377.16 263 255 65.8
D 2 250 100656 1525.59 263 255 65.8

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