ASTROSAT CZTI

Data Quality Report

Orbit 12253

Creation date: 2024-06-27T16:24:29.491792
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/AS1C03_005T01_9000001810_12253cztM0_level2.evt modeM0/AS1C03_005T01_9000001810_12253cztM0_level2_quad_clean.evt
Size (bytes)906,598,080214,683,840
Size864.6 MB 204.7 MB
Events in quadrant A6,535,5731,443,268
Events in quadrant B6,941,6201,447,421
Events in quadrant C6,038,8971,420,248
Events in quadrant D7,123,9851,356,930

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0275154
B0288664
C0264734
D0296614

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02480
B02480
C02480
D02480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A120601591.318408%
B120603763.117745%
C120601331.102819%
D120604403.648425%

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 13101 12065 10 10 0.08% 0.08%
B 13101 12065 140 140 1.07% 1.16%
C 13101 12065 57 57 0.44% 0.47%
D 13101 12065 314 314 2.40% 2.60%

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 1 162 298033 1062.4 1381 1354 279.3
A 13 251 226347 805.69 1381 1354 279.3
A 1 178 176292 626.45 1381 1354 279.3
B 4 239 887540 3446.39 1375 1342 257.1
B 0 229 134362 517.31 1375 1342 257.1
B 15 52 104791 402.31 1375 1342 257.1
C 15 208 654885 2125.92 1332 1337 307.4
C 1 16 102436 328.86 1332 1337 307.4
C 4 175 45064 142.24 1332 1337 307.4
D 1 52 1064029 3340.59 1320 1281 318.1
D 13 104 199926 624.41 1320 1281 318.1
D 13 172 192428 600.84 1320 1281 318.1

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