ASTROSAT CZTI

Data Quality Report

Orbit 36975

Creation date: 2024-06-27T21:33:48.209392
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/AS1A11_079T01_9000005254_36975cztM0_level2.evt modeM0/AS1A11_079T01_9000005254_36975cztM0_level2_quad_clean.evt
Size (bytes)690,301,44074,813,760
Size658.3 MB 71.3 MB
Events in quadrant A3,048,705472,485
Events in quadrant B6,315,259446,751
Events in quadrant C3,523,891479,063
Events in quadrant D7,593,091427,786

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129683
B0232672
C0143302
D0267402

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A628650.079542%
B628668810.944957%
C6286360.572701%
D6286152324.228444%

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 9272 6288 1 1 0.01% 0.02%
B 9272 6288 486 486 5.24% 7.73%
C 9272 6288 26 26 0.28% 0.41%
D 9272 6288 1418 1418 15.29% 22.55%

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 10 83 243138 1667.86 716 702 145.4
A 15 237 13988 91.4 716 702 145.4
A 9 143 10279 65.89 716 702 145.4
B 5 184 2692757 19929.21 692 672 135.1
B 0 229 347530 2567.75 692 672 135.1
B 4 81 174841 1289.35 692 672 135.1
C 15 214 268375 1625.25 704 709 164.7
C 0 10 224830 1360.85 704 709 164.7
C 0 207 129589 782.55 704 709 164.7
D 12 17 3880946 25123.92 624 607 154.4
D 2 250 874491 5658.11 624 607 154.4
D 10 253 223002 1439.93 624 607 154.4

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