ASTROSAT CZTI

Data Quality Report

Orbit 36784

Creation date: 2024-06-27T21:31:37.146442
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_083T01_9000005242_36784cztM0_level2.evt modeM0/AS1A11_083T01_9000005242_36784cztM0_level2_quad_clean.evt
Size (bytes)643,222,08050,186,880
Size613.4 MB 47.9 MB
Events in quadrant A2,505,670380,950
Events in quadrant B10,618,60067,530
Events in quadrant C2,654,470372,778
Events in quadrant D3,370,857354,417

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0102013
B0349082
C0105912
D0131842

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A487560.123077%
B4875375376.984615%
C4875350.717949%
D48752334.779487%

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 6968 4876 0 0 0.00% 0.00%
B 6968 4875 3534 3534 50.72% 72.49%
C 6968 4876 23 23 0.33% 0.47%
D 6968 4876 222 222 3.19% 4.55%

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 199657 1682.84 593 584 118.3
A 13 6 11157 89.38 593 584 118.3
A 13 254 7476 58.26 593 584 118.3
B 12 1 9332615 164480.5 295 289 56.7
B 4 171 28038 489.07 295 289 56.7
B 0 221 22154 385.37 295 289 56.7
C 15 214 225038 1696.84 572 576 132.3
C 0 207 124619 937.71 572 576 132.3
C 0 10 48083 359.13 572 576 132.3
D 12 6 710791 5152.17 564 548 137.9
D 13 249 116291 839.61 564 548 137.9
D 12 227 110814 799.88 564 548 137.9

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