ASTROSAT CZTI

Data Quality Report

Orbit 22000

Creation date: 2024-06-27T18:35:07.948660
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_153T02_9000003250_22000cztM0_level2.evt modeM0/AS1A07_153T02_9000003250_22000cztM0_level2_quad_clean.evt
Size (bytes)542,894,40074,142,720
Size517.7 MB 70.7 MB
Events in quadrant A3,702,945457,010
Events in quadrant B3,933,845460,497
Events in quadrant C3,661,627436,005
Events in quadrant D4,692,029427,384

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152902
B0159272
C0151682
D0188132

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66541071.608055%
B66541271.908626%
C66541462.194169%
D66541792.690111%

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 6654 0 0 0.00% 0.00%
B 7939 6654 11 11 0.14% 0.17%
C 7939 6654 0 0 0.00% 0.00%
D 7939 6654 101 101 1.27% 1.52%

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 15 236 36114 192.59 949 936 182.7
A 13 254 11324 56.87 949 936 182.7
A 0 226 8398 40.85 949 936 182.7
B 3 64 91094 528.78 936 920 170.5
B 0 230 67964 393.15 936 920 170.5
B 0 197 65982 381.53 936 920 170.5
C 14 238 143435 695.56 898 906 204.9
C 0 10 19340 89.96 898 906 204.9
C 13 61 6232 25.99 898 906 204.9
D 1 52 904389 4189.72 911 886 215.6
D 7 238 200754 926.83 911 886 215.6
D 13 172 37812 171.23 911 886 215.6

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