ASTROSAT CZTI

Data Quality Report

Orbit 10968

Creation date: 2024-06-27T16:06:54.539119
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/AS1G08_030T01_9000001592_10968cztM0_level2.evt modeM0/AS1G08_030T01_9000001592_10968cztM0_level2_quad_clean.evt
Size (bytes)551,851,20056,782,080
Size526.3 MB 54.2 MB
Events in quadrant A6,585,928270,617
Events in quadrant B3,510,127349,767
Events in quadrant C2,764,016345,677
Events in quadrant D3,441,059328,602

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0236542
B0143471
C0123321
D0142471

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6068136522.495056%
B60681762.900461%
C6068170.280158%
D6068921.516150%

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 7218 6069 1147 1147 15.89% 18.90%
B 7218 6068 83 83 1.15% 1.37%
C 7218 6069 2 2 0.03% 0.03%
D 7218 6069 65 65 0.90% 1.07%

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 13 210 2476990 18745.89 653 641 132.1
A 8 5 1578841 11946.93 653 641 132.1
A 11 29 8193 57.17 653 641 132.1
B 4 239 557630 4013.07 729 711 138.8
B 0 214 35846 253.17 729 711 138.8
B 0 187 26878 188.55 729 711 138.8
C 14 234 7245 39.63 707 712 164.9
C 13 61 5198 27.21 707 712 164.9
C 8 222 2391 10.18 707 712 164.9
D 1 52 450910 2668.3 697 678 168.7
D 5 222 122148 719.89 697 678 168.7
D 10 172 58109 340.36 697 678 168.7

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