ASTROSAT CZTI

Data Quality Report

Orbit 01064

Creation date: 2024-06-27T14:06:55.086057
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/AS1P01_998T02_9000000190_01064cztM0_level2.evt modeM0/AS1P01_998T02_9000000190_01064cztM0_level2_quad_clean.evt
Size (bytes)1,172,577,600124,525,440
Size1.1 GB 118.8 MB
Events in quadrant A8,682,505820,596
Events in quadrant B9,253,716825,623
Events in quadrant C8,909,605809,974
Events in quadrant D8,169,592794,706

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310812
B0328032
C0317972
D0296752

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A748950.066765%
B7490400.534045%
C749080.106809%
D7490500.667557%

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 8689 7491 153 153 1.76% 2.04%
B 8690 7492 268 268 3.08% 3.58%
C 8690 7492 217 217 2.50% 2.90%
D 8690 7492 224 224 2.58% 2.99%

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 0 253 44165 77.33 2251 2272 541.8
A 11 79 9002 12.42 2251 2272 541.8
A 3 111 6993 8.71 2251 2272 541.8
B 5 191 132263 235.32 2364 2372 552.0
B 15 22 37345 63.36 2364 2372 552.0
B 4 141 32677 54.9 2364 2372 552.0
C 15 241 389710 640.62 2165 2245 604.8
C 3 79 31504 48.38 2165 2245 604.8
C 3 111 31351 48.12 2165 2245 604.8
D 9 64 126153 192.02 2085 2167 645.7
D 13 73 57826 86.2 2085 2167 645.7
D 10 102 55050 81.9 2085 2167 645.7

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