ASTROSAT CZTI

Data Quality Report

Orbit 00655

Creation date: 2024-06-27T14:01:05.408952
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/AS1P01_126T04_9000000092_00655cztM0_level2.evt modeM0/AS1P01_126T04_9000000092_00655cztM0_level2_quad_clean.evt
Size (bytes)789,477,12051,436,800
Size752.9 MB 49.1 MB
Events in quadrant A6,163,135299,881
Events in quadrant B6,092,930305,106
Events in quadrant C5,471,596307,293
Events in quadrant D5,849,939294,952

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0218152
B0216682
C0197932
D0209244

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4986190.381067%
B4986110.220618%
C4986120.240674%
D4985420.842528%

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 4987 172 172 2.41% 3.45%
B 7141 4987 109 109 1.53% 2.19%
C 7141 4987 64 64 0.90% 1.28%
D 7140 4986 171 171 2.39% 3.43%

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 0 69 94730 273.65 1534 1521 340.6
A 14 79 33324 93.37 1534 1521 340.6
A 0 238 33002 92.43 1534 1521 340.6
B 7 221 138331 382.69 1510 1524 357.5
B 4 172 55070 149.78 1510 1524 357.5
B 0 220 38976 104.76 1510 1524 357.5
C 10 117 69594 177.89 1362 1410 383.3
C 9 52 23787 58.38 1362 1410 383.3
C 5 249 18156 43.69 1362 1410 383.3
D 1 4 362569 856.0 1336 1387 421.9
D 13 216 100102 233.96 1336 1387 421.9
D 12 237 80512 187.53 1336 1387 421.9

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