ASTROSAT CZTI

Data Quality Report

Orbit 25508

Creation date: 2024-06-27T19:18:28.169100
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/AS1A07_147T01_9000003722_25508cztM0_level2.evt modeM0/AS1A07_147T01_9000003722_25508cztM0_level2_quad_clean.evt
Size (bytes)551,839,680103,095,360
Size526.3 MB 98.3 MB
Events in quadrant A3,669,294671,083
Events in quadrant B3,720,483676,829
Events in quadrant C3,664,346637,661
Events in quadrant D5,155,013620,291

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154040
B0155140
C0154100
D0200950

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74151231.658800%
B74151502.022927%
C74151552.090357%
D74141982.670623%

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 7939 7416 0 0 0.00% 0.00%
B 7939 7416 0 0 0.00% 0.00%
C 7939 7416 0 0 0.00% 0.00%
D 7938 7415 71 71 0.89% 0.96%

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 13 254 11893 56.92 949 928 192.6
A 3 137 8765 40.69 949 928 192.6
A 0 226 8189 37.7 949 928 192.6
B 3 112 25504 135.41 937 915 181.6
B 12 111 22305 117.79 937 915 181.6
B 0 190 21778 114.89 937 915 181.6
C 14 238 144202 681.3 898 903 210.3
C 2 16 7478 31.26 898 903 210.3
C 13 61 6127 24.84 898 903 210.3
D 7 238 860474 3790.58 917 889 226.8
D 12 233 349467 1537.15 917 889 226.8
D 1 52 316240 1390.63 917 889 226.8

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