ASTROSAT CZTI

Data Quality Report

Orbit 20949

Creation date: 2024-06-27T18:21:34.493316
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/AS1A05_088T05_9000003088_20949cztM0_level2.evt modeM0/AS1A05_088T05_9000003088_20949cztM0_level2_quad_clean.evt
Size (bytes)560,689,920107,475,840
Size534.7 MB 102.5 MB
Events in quadrant A3,631,815702,633
Events in quadrant B3,899,603705,453
Events in quadrant C3,640,075672,665
Events in quadrant D5,293,904645,818

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157071
B0162961
C0157151
D0209521

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7592781.027397%
B75931181.554063%
C75931051.382853%
D75933354.411958%

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 7892 7593 0 0 0.00% 0.00%
B 7893 7594 5 5 0.06% 0.07%
C 7893 7594 0 0 0.00% 0.00%
D 7893 7594 248 248 3.14% 3.27%

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 5 16 10002 47.84 939 919 189.9
A 10 253 8699 40.98 939 919 189.9
A 0 226 8185 38.27 939 919 189.9
B 0 229 97676 535.08 929 908 180.8
B 3 64 56976 310.03 929 908 180.8
B 4 216 38108 205.7 929 908 180.8
C 14 238 137801 650.13 892 897 210.6
C 0 207 10238 44.36 892 897 210.6
C 5 4 7638 32.01 892 897 210.6
D 9 1 629033 2844.25 903 876 220.9
D 5 222 475169 2147.57 903 876 220.9
D 1 52 195236 880.05 903 876 220.9

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