ASTROSAT CZTI

Data Quality Report

Orbit 19762

Creation date: 2024-06-27T18:06:42.079410
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_022T08_9000002950_19762cztM0_level2.evt modeM0/AS1A05_022T08_9000002950_19762cztM0_level2_quad_clean.evt
Size (bytes)437,935,68037,880,640
Size417.6 MB 36.1 MB
Events in quadrant A1,867,797228,410
Events in quadrant B2,041,827232,538
Events in quadrant C4,414,807193,042
Events in quadrant D4,661,049204,395

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A114056482411600846
B1-1-1
C1-1-1
D1-1-1

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A082621
B087041
C0159761
D0165861

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4081110.269542%
B4081170.416565%
C408156513.844646%
D4081106125.998530%

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 4081 4081 0 0 0.00% 0.00%
B 4081 4081 9 9 0.22% 0.22%
C 4081 4081 373 373 9.14% 9.14%
D 4081 4081 915 915 22.42% 22.42%

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 0 226 4228 38.02 483 471 98.8
A 13 254 4151 37.24 483 471 98.8
A 3 137 3967 35.38 483 471 98.8
B 7 220 115622 1228.24 482 470 93.8
B 0 190 14691 151.68 482 470 93.8
B 12 111 11311 115.63 482 470 93.8
C 3 233 2633138 25348.17 439 441 103.9
C 14 238 67865 649.17 439 441 103.9
C 13 61 3058 25.2 439 441 103.9
D 7 238 2361670 24730.43 387 376 95.5
D 1 52 542751 5680.43 387 376 95.5
D 12 218 173265 1810.71 387 376 95.5

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