ASTROSAT CZTI

Data Quality Report

Orbit 38629

Creation date: 2024-06-27T21:54:21.019894
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/AS1A12_061T03_9000005390_38629cztM0_level2.fits modeM0/AS1A12_061T03_9000005390_38629cztM0_level2_quad_clean.evt
Size (bytes)966,502,080167,287,680
Size921.7 MB 159.5 MB
Events in quadrant A5,688,9991,214,224
Events in quadrant B6,569,0961,222,928
Events in quadrant C5,688,7771,187,050
Events in quadrant D16,991,803691,603

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02220
B02220
C02220
D02220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0234374
B0266013
C0234523
D0576733

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10823500.461979%
B108232372.189781%
C10823950.877760%
D10823437840.450892%

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 14912 10826 24 24 0.16% 0.22%
B 14912 10826 128 128 0.86% 1.18%
C 14912 10826 84 84 0.56% 0.78%
D 14912 10826 4445 4445 29.81% 41.06%

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 779356 3107.53 1232 1208 250.4
A 0 247 42268 163.97 1232 1208 250.4
A 9 143 39497 152.91 1232 1208 250.4
B 4 171 748061 3204.2 1219 1186 233.1
B 0 183 532002 2277.27 1219 1186 233.1
B 5 184 250755 1070.69 1219 1186 233.1
C 15 214 428057 1509.22 1205 1213 282.8
C 14 254 293777 1034.44 1205 1213 282.8
C 3 9 209075 734.95 1205 1213 282.8
D 12 227 10073425 43407.74 941 914 232.0
D 2 249 749730 3227.04 941 914 232.0
D 2 250 740900 3188.99 941 914 232.0

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