ASTROSAT CZTI

Data Quality Report

Orbit 25506

Creation date: 2024-06-27T19:18:25.773267
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/AS1A08_003T17_9000003720_25506cztM0_level2.evt modeM0/AS1A08_003T17_9000003720_25506cztM0_level2_quad_clean.evt
Size (bytes)328,968,00065,522,880
Size313.7 MB 62.5 MB
Events in quadrant A2,277,401437,258
Events in quadrant B2,362,775439,350
Events in quadrant C2,243,740404,644
Events in quadrant D2,785,009399,044

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A092430
B095250
C091880
D0110140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4315260.602549%
B4315400.926999%
C4315471.089224%
D4315611.413673%

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 4315 4315 0 0 0.00% 0.00%
B 4315 4315 13 13 0.30% 0.30%
C 4315 4315 0 0 0.00% 0.00%
D 4315 4315 47 47 1.09% 1.09%

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 6395 49.41 591 582 117.7
A 0 226 5116 38.54 591 582 117.7
A 3 137 4918 36.85 591 582 117.7
B 0 229 70879 652.09 578 567 107.8
B 0 190 32413 295.35 578 567 107.8
B 12 111 12506 110.73 578 567 107.8
C 14 238 90560 708.33 548 551 127.1
C 3 233 9951 73.97 548 551 127.1
C 0 10 6608 47.67 548 551 127.1
D 1 52 328554 2405.19 560 545 136.4
D 7 238 157544 1151.22 560 545 136.4
D 8 195 150885 1102.4 560 545 136.4

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