ASTROSAT CZTI

Data Quality Report

Orbit 18694

Creation date: 2024-06-27T17:53:30.260306
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/AS1A05_072T04_9000002794_18694cztM0_level2.evt modeM0/AS1A05_072T04_9000002794_18694cztM0_level2_quad_clean.evt
Size (bytes)563,708,160110,352,960
Size537.6 MB 105.2 MB
Events in quadrant A3,689,646701,449
Events in quadrant B3,758,664719,707
Events in quadrant C4,090,973695,037
Events in quadrant D4,996,873676,926

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164502
B0165682
C0174782
D0203522

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7895801.013300%
B78951151.456618%
C78952182.761241%
D78962603.292806%

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 8760 7897 6 6 0.07% 0.08%
B 8760 7897 2 2 0.02% 0.03%
C 8760 7897 39 39 0.45% 0.49%
D 8761 7898 172 172 1.96% 2.18%

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 0 13 29149 147.35 940 923 191.6
A 9 143 21357 106.67 940 923 191.6
A 13 254 11704 56.28 940 923 191.6
B 12 111 22518 117.93 943 917 183.2
B 11 111 19380 100.8 943 917 183.2
B 4 216 17512 90.6 943 917 183.2
C 9 54 343182 1609.81 903 909 212.6
C 14 238 139171 650.29 903 909 212.6
C 5 112 41195 189.48 903 909 212.6
D 1 52 1235788 5565.81 906 880 221.9
D 7 238 317010 1424.82 906 880 221.9
D 2 234 35100 154.23 906 880 221.9

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