ASTROSAT CZTI

Data Quality Report

Orbit 51380

Creation date: 2025-03-29T04:08:52.708230
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_001T03_9000006456_51380cztM0_level2.fits modeM0/AS1C07_001T03_9000006456_51380cztM0_level2_quad_clean.evt
Size (bytes)257,299,20030,775,680
Size245.4 MB 29.3 MB
Events in quadrant A2,482,582199,150
Events in quadrant B1,332,040225,952
Events in quadrant C3,776,098143,442
Events in quadrant D1,743,434188,552

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06917
B06513
C07018
D06816

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119812859
B074961866
C0164893631
D083531437

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143
B0198
C0165
D0165

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A24261937.955482%
B2437793.241691%
C240897240.365449%
D24391194.879049%

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 5546 2443 135 135 2.43% 5.53%
B 5651 2461 14 14 0.25% 0.57%
C 5549 2416 978 978 17.62% 40.48%
D 5675 2464 66 66 1.16% 2.68%

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 12 3 734312 11845.66 245 239 62.0
A 15 174 464020 7483.99 245 239 62.0
A 4 3 93556 1505.85 245 239 62.0
B 4 81 110396 1972.39 255 247 55.8
B 0 216 33157 589.3 255 247 55.8
B 4 206 31867 566.21 255 247 55.8
C 15 179 2400399 39797.15 212 210 60.3
C 9 38 198057 3280.47 212 210 60.3
C 12 250 110713 1832.23 212 210 60.3
D 11 176 551791 7940.91 244 234 69.5
D 10 172 62074 890.33 244 234 69.5
D 15 94 38576 552.02 244 234 69.5

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