ASTROSAT CZTI

Data Quality Report

Orbit 27815

Creation date: 2024-06-27T19:44:46.496355
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/AS1A10_048T08_9000004020_27815cztM0_level2.evt modeM0/AS1A10_048T08_9000004020_27815cztM0_level2_quad_clean.evt
Size (bytes)701,478,720121,259,520
Size669.0 MB 115.6 MB
Events in quadrant A4,317,506787,549
Events in quadrant B5,468,370774,350
Events in quadrant C4,873,999752,803
Events in quadrant D5,972,933731,030

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0185580
B0218290
C0201090
D0235650

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9033880.974206%
B90333734.129304%
C90332222.457655%
D90324034.461913%

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 10638 9033 0 0 0.00% 0.00%
B 10638 9033 227 227 2.13% 2.51%
C 10638 9033 26 26 0.24% 0.29%
D 10637 9032 320 320 3.01% 3.54%

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 13 254 14626 59.6 1119 1094 227.0
A 3 137 10757 42.56 1119 1094 227.0
A 0 226 9503 37.04 1119 1094 227.0
B 10 245 985242 4633.06 1098 1068 212.4
B 15 32 83938 390.12 1098 1068 212.4
B 0 190 34447 157.13 1098 1068 212.4
C 3 233 347347 1379.93 1065 1074 250.9
C 15 208 203633 807.21 1065 1074 250.9
C 14 238 170110 673.62 1065 1074 250.9
D 1 52 1710033 6679.21 1068 1038 255.9
D 2 250 144773 561.75 1068 1038 255.9
D 2 234 39762 151.34 1068 1038 255.9

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