ASTROSAT CZTI

Data Quality Report

Orbit 38658

Creation date: 2024-06-27T21:54:44.823680
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_054T01_9000005392_38658cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38658cztM0_level2_quad_clean.evt
Size (bytes)704,983,680173,612,160
Size672.3 MB 165.6 MB
Events in quadrant A6,337,6641,189,804
Events in quadrant B6,444,4631,142,906
Events in quadrant C5,453,6681,154,009
Events in quadrant D7,031,5571,029,902

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0256454
B0265203
C0229493
D0281643

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A106851661.553580%
B106856696.261114%
C106851091.020122%
D106855975.587272%

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 13491 10686 138 138 1.02% 1.29%
B 13491 10686 570 570 4.23% 5.33%
C 13491 10686 92 92 0.68% 0.86%
D 13491 10686 514 514 3.81% 4.81%

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 742859 3063.77 1201 1177 242.1
A 13 248 479214 1974.7 1201 1177 242.1
A 9 143 390540 1608.4 1201 1177 242.1
B 5 184 1795496 8059.47 1151 1119 222.6
B 15 32 33869 147.1 1151 1119 222.6
B 12 111 28087 121.13 1151 1119 222.6
C 15 214 426884 1553.33 1169 1175 274.1
C 2 16 296295 1076.84 1169 1175 274.1
C 14 254 97206 350.4 1169 1175 274.1
D 12 6 1172976 4183.29 1148 1116 280.1
D 13 249 458466 1632.64 1148 1116 280.1
D 12 233 226349 804.03 1148 1116 280.1

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