ASTROSAT CZTI

Data Quality Report

Orbit 28458

Creation date: 2024-06-27T19:51:57.309663
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_101T21_9000004090_28458cztM0_level2.evt modeM0/AS1A10_101T21_9000004090_28458cztM0_level2_quad_clean.evt
Size (bytes)605,157,120138,962,880
Size577.1 MB 132.5 MB
Events in quadrant A3,718,401965,484
Events in quadrant B3,385,348992,694
Events in quadrant C3,466,330963,630
Events in quadrant D7,332,243848,657

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152260
B0141290
C0144400
D0261770

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62831191.894000%
B62831171.862168%
C62831762.801210%
D6283112617.921375%

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 7613 6283 18 18 0.24% 0.29%
B 7613 6283 2 2 0.03% 0.03%
C 7613 6283 2 2 0.03% 0.03%
D 7613 6283 996 996 13.08% 15.85%

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 15 174 444982 2696.56 843 829 164.7
A 12 96 10669 59.74 843 829 164.7
A 13 254 10387 58.03 843 829 164.7
B 10 245 50852 325.75 841 824 153.6
B 10 246 28850 182.49 841 824 153.6
B 12 111 17990 111.77 841 824 153.6
C 14 238 139312 723.74 833 839 191.3
C 7 220 46723 239.82 833 839 191.3
C 3 233 30981 157.54 833 839 191.3
D 1 52 3285131 18047.2 777 760 182.0
D 2 250 468916 2572.46 777 760 182.0
D 13 104 271981 1490.33 777 760 182.0

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