ASTROSAT CZTI

Data Quality Report

Orbit 13995

Creation date: 2024-06-27T16:48:48.301899
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/AS1A04_038T02_9000002068_13995cztM0_level2.evt modeM0/AS1A04_038T02_9000002068_13995cztM0_level2_quad_clean.evt
Size (bytes)224,205,12059,898,240
Size213.8 MB 57.1 MB
Events in quadrant A1,477,746413,457
Events in quadrant B1,590,983420,079
Events in quadrant C1,589,375396,331
Events in quadrant D1,940,104383,915

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A061492
B065411
C065041
D076431

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2798281.000715%
B2798491.751251%
C2798230.822016%
D2798702.501787%

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 4099 2800 0 0 0.00% 0.00%
B 4099 2800 12 12 0.29% 0.43%
C 4099 2800 9 9 0.22% 0.32%
D 4099 2800 47 47 1.15% 1.68%

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 8 15 13121 168.31 371 364 75.8
A 9 143 10579 134.77 371 364 75.8
A 12 189 10341 131.63 371 364 75.8
B 0 189 57954 811.86 370 361 70.9
B 0 219 23723 329.32 370 361 70.9
B 3 64 19389 268.23 370 361 70.9
C 3 233 171710 2098.16 353 355 81.7
C 0 207 33361 404.14 353 355 81.7
C 14 234 8919 104.86 353 355 81.7
D 13 104 149489 1628.6 350 343 91.6
D 8 195 105723 1150.7 350 343 91.6
D 13 122 83534 908.41 350 343 91.6

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