ASTROSAT CZTI

Data Quality Report

Orbit 34445

Creation date: 2022-02-10T12:58:00.502567
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_058T05_9000004918_34445cztM0_level2.evt modeM0/AS1A10_058T05_9000004918_34445cztM0_level2_quad_clean.evt
Size (bytes)1,781,424,000197,481,600
Size1.7 GB 188.3 MB
Events in quadrant A8,540,1711,215,532
Events in quadrant B12,504,2681,212,763
Events in quadrant C9,522,5951,207,230
Events in quadrant D22,143,2891,074,280

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0374005
B0493314
C0389224
D0786754

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03780
B03780
C03780
D03780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18435260.141036%
B1843511836.417141%
C18435420.227828%
D18435226812.302685%

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 23896 18439 5 5 0.02% 0.03%
B 23896 18439 830 830 3.47% 4.50%
C 23896 18439 23 23 0.10% 0.12%
D 23896 18439 1873 1873 7.84% 10.16%

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 82293 184.63 2169 2125 434.2
A 0 31 37102 80.55 2169 2125 434.2
A 13 254 30038 64.28 2169 2125 434.2
B 5 172 3315087 8306.56 2094 2036 398.8
B 0 190 397734 992.1 2094 2036 398.8
B 0 229 335380 835.77 2094 2036 398.8
C 15 214 766741 1568.76 2115 2128 487.4
C 3 233 163414 330.91 2115 2128 487.4
C 0 10 147328 297.91 2115 2128 487.4
D 8 195 7298510 14699.29 2030 1970 496.4
D 12 235 2394402 4819.69 2030 1970 496.4
D 13 249 1237282 2488.61 2030 1970 496.4

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