ASTROSAT CZTI

Data Quality Report

Orbit 43439

Creation date: 2024-06-27T22:51:59.633031
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_018T01_9000005874_43439cztM0_level2.fits modeM0/AS1A12_018T01_9000005874_43439cztM0_level2_quad_clean.evt
Size (bytes)985,515,840160,021,440
Size939.9 MB 152.6 MB
Events in quadrant A15,901,439754,395
Events in quadrant B5,649,8861,212,559
Events in quadrant C5,174,3201,128,427
Events in quadrant D8,906,549990,595

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05491817
B0239343
C0224263
D0340943

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0300
C0300
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02240
B02240
C02240
D02240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10956433839.594743%
B10958460.419785%
C1095870.063880%
D109587687.008578%

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 13644 10957 3586 3586 26.28% 32.73%
B 13645 10960 19 19 0.14% 0.17%
C 13645 10960 3 3 0.02% 0.03%
D 13645 10960 760 760 5.57% 6.93%

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 15 222 9988083 52608.64 927 909 189.8
A 15 237 1339487 7051.12 927 909 189.8
A 10 83 931433 4901.65 927 909 189.8
B 0 199 381433 1690.37 1175 1143 225.0
B 0 189 250245 1107.25 1175 1143 225.0
B 0 229 107097 470.96 1175 1143 225.0
C 15 214 456275 1709.54 1147 1151 266.2
C 3 233 243475 910.22 1147 1151 266.2
C 13 61 7698 24.59 1147 1151 266.2
D 1 52 2509231 9206.63 1119 1086 272.4
D 2 16 727201 2665.35 1119 1086 272.4
D 13 249 505799 1852.65 1119 1086 272.4

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