ASTROSAT CZTI

Data Quality Report

Orbit 37391

Creation date: 2024-06-27T21:39:22.817101
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/AS1C07_001T01_9000005320_37391cztM0_level2.evt modeM0/AS1C07_001T01_9000005320_37391cztM0_level2_quad_clean.evt
Size (bytes)579,490,56095,529,600
Size552.6 MB 91.1 MB
Events in quadrant A2,632,751680,124
Events in quadrant B2,551,402692,122
Events in quadrant C3,932,396647,155
Events in quadrant D8,095,780522,869

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107703
B0106312
C0147862
D0275402

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4988140.280674%
B4988260.521251%
C49883196.395349%
D4988186737.429832%

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 7141 4989 5 5 0.07% 0.10%
B 7141 4989 16 16 0.22% 0.32%
C 7141 4989 299 299 4.19% 5.99%
D 7141 4989 1615 1615 22.62% 32.37%

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 10 83 276070 2350.12 586 575 117.2
A 9 143 34446 288.94 586 575 117.2
A 12 227 15789 129.78 586 575 117.2
B 5 172 85224 774.88 581 567 109.3
B 4 232 39581 357.1 581 567 109.3
B 4 171 29765 267.26 581 567 109.3
C 1 23 1421271 11272.58 546 549 126.0
C 15 214 211768 1675.9 546 549 126.0
C 0 10 91214 719.37 546 549 126.0
D 12 235 3394328 29282.51 481 467 115.9
D 12 227 1684331 14528.52 481 467 115.9
D 2 249 476360 4106.04 481 467 115.9

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