ASTROSAT CZTI

Data Quality Report

Orbit 19145

Creation date: 2024-06-27T17:59:30.739716
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_046T01_9000002838_19145cztM0_level2.evt modeM0/AS1A05_046T01_9000002838_19145cztM0_level2_quad_clean.evt
Size (bytes)2,555,539,200407,914,560
Size2.4 GB 389.0 MB
Events in quadrant A16,163,3922,510,081
Events in quadrant B20,253,1352,565,279
Events in quadrant C17,736,8192,488,523
Events in quadrant D20,912,3222,420,085

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0709717
B0824877
C0746427
D0854517

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07020
B07020
C07020
D07020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A344956411.858240%
B3449515254.420931%
C344957972.310480%
D3449521316.177707%

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 38125 34495 0 0 0.00% 0.00%
B 38125 34498 493 493 1.29% 1.43%
C 38125 34500 24 24 0.06% 0.07%
D 38125 34499 1429 1429 3.75% 4.14%

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 37200 39.13 4187 4088 846.2
A 0 226 36430 38.22 4187 4088 846.2
A 3 137 33176 34.38 4187 4088 846.2
B 6 36 1481311 1864.45 4155 4045 792.3
B 3 64 1432089 1802.33 4155 4045 792.3
B 7 220 737771 926.03 4155 4045 792.3
C 3 233 1193334 1248.52 4050 4071 952.5
C 14 238 622369 649.11 4050 4071 952.5
C 0 207 128719 130.86 4050 4071 952.5
D 1 52 5542950 5674.39 4019 3897 976.2
D 2 234 149117 148.77 4019 3897 976.2
D 7 238 48428 45.62 4019 3897 976.2

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