ASTROSAT CZTI

Data Quality Report

Orbit 08508

Creation date: 2024-06-27T15:33:38.407246
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/AS1G07_060T01_9000001200_08508cztM0_level2.evt modeM0/AS1G07_060T01_9000001200_08508cztM0_level2_quad_clean.evt
Size (bytes)399,271,68086,843,520
Size380.8 MB 82.8 MB
Events in quadrant A2,955,736548,686
Events in quadrant B3,064,673557,738
Events in quadrant C2,839,438550,079
Events in quadrant D2,799,761530,204

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132105
B0134532
C0129582
D0131464

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6347460.724752%
B6348400.630120%
C6348150.236295%
D6347130.204821%

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 7503 6349 19 19 0.25% 0.30%
B 7503 6349 8 8 0.11% 0.13%
C 7503 6349 0 0 0.00% 0.00%
D 7503 6349 2 2 0.03% 0.03%

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 100494 662.42 740 722 150.6
A 13 14 7546 45.31 740 722 150.6
A 0 226 6750 40.02 740 722 150.6
B 5 255 55109 384.0 747 729 141.6
B 0 214 39959 277.02 747 729 141.6
B 10 252 29130 200.55 747 729 141.6
C 13 61 5401 27.58 727 728 169.5
C 8 222 3253 14.9 727 728 169.5
C 3 202 1809 6.38 727 728 169.5
D 13 105 37962 208.53 719 699 178.7
D 2 234 20956 113.36 719 699 178.7
D 9 64 20686 111.85 719 699 178.7

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