ASTROSAT CZTI

Data Quality Report

Orbit 27774

Creation date: 2024-06-27T19:44:12.211887
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/AS1A09_038T40_9000004012_27774cztM0_level2.evt modeM0/AS1A09_038T40_9000004012_27774cztM0_level2_quad_clean.evt
Size (bytes)274,302,72077,751,360
Size261.6 MB 74.1 MB
Events in quadrant A1,812,367532,739
Events in quadrant B2,075,812531,206
Events in quadrant C2,062,888504,071
Events in quadrant D2,077,402498,996

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A082080
B088280
C088210
D090470

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A407820.049044%
B4079150.367737%
C4079260.637411%
D4079390.956117%

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 4078 4078 1 1 0.02% 0.02%
B 4079 4079 9 9 0.22% 0.22%
C 4079 4079 6 6 0.15% 0.15%
D 4079 4079 35 35 0.86% 0.86%

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 13 248 9911 99.1 467 457 95.4
A 13 254 7535 74.19 467 457 95.4
A 3 137 4236 39.61 467 457 95.4
B 3 64 142511 1601.07 464 454 88.7
B 0 190 51000 569.68 464 454 88.7
B 0 230 17962 197.33 464 454 88.7
C 3 233 275726 2648.86 439 441 103.9
C 14 238 71341 682.22 439 441 103.9
C 15 208 4717 41.14 439 441 103.9
D 1 52 238914 2225.94 443 431 107.1
D 2 250 102399 951.74 443 431 107.1
D 2 234 18717 170.68 443 431 107.1

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