ASTROSAT CZTI

Data Quality Report

Orbit 12774

Creation date: 2024-06-27T16:32:05.717860
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/AS1A04_110T04_9000001886_12774cztM0_level2.evt modeM0/AS1A04_110T04_9000001886_12774cztM0_level2_quad_clean.evt
Size (bytes)1,331,343,360344,200,320
Size1.2 GB 328.3 MB
Events in quadrant A8,914,9342,302,321
Events in quadrant B10,634,7822,304,072
Events in quadrant C8,590,5202,297,765
Events in quadrant D10,867,9022,185,916

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03960
B03960
C03960
D03960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0399835
B0446514
C0397814
D0459814

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A19403820.422615%
B194036793.499459%
C19403630.324692%
D194034652.396537%

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 21579 19409 1 1 0.00% 0.01%
B 21579 19409 361 361 1.67% 1.86%
C 21579 19409 7 7 0.03% 0.04%
D 21579 19409 345 345 1.60% 1.78%

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 12 189 147062 323.23 2222 2172 448.3
A 8 15 136444 299.55 2222 2172 448.3
A 8 6 52222 111.66 2222 2172 448.3
B 4 239 1626615 3923.1 2196 2138 414.1
B 3 64 95507 225.49 2196 2138 414.1
B 0 219 92551 218.35 2196 2138 414.1
C 15 208 179595 358.24 2156 2161 495.3
C 13 61 15885 27.71 2156 2161 495.3
C 8 222 6228 8.21 2156 2161 495.3
D 1 52 1680866 3293.82 2132 2066 509.7
D 8 195 435555 850.51 2132 2066 509.7
D 13 104 219398 426.41 2132 2066 509.7

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