ASTROSAT CZTI

Data Quality Report

Orbit 35395

Creation date: 2024-06-27T21:12:56.194005
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/AS1A11_099T01_9000005068_35395cztM0_level2.evt modeM0/AS1A11_099T01_9000005068_35395cztM0_level2_quad_clean.evt
Size (bytes)718,836,48071,844,480
Size685.5 MB 68.5 MB
Events in quadrant A2,575,245530,520
Events in quadrant B9,251,500339,393
Events in quadrant C3,153,758517,897
Events in quadrant D6,441,352424,947

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106963
B0309832
C0123212
D0226802

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A515780.155129%
B5157291856.583285%
C51571522.947450%
D5157125224.277681%

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 7070 5158 0 0 0.00% 0.00%
B 7070 5158 2341 2341 33.11% 45.39%
C 7070 5158 112 112 1.58% 2.17%
D 7070 5158 1020 1020 14.43% 19.78%

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 10 83 126313 988.24 623 610 127.2
A 13 6 17297 131.19 623 610 127.2
A 9 143 10930 81.13 623 610 127.2
B 4 251 5044574 58135.23 447 437 86.8
B 0 182 474668 5465.66 447 437 86.8
B 5 14 441916 5088.18 447 437 86.8
C 0 10 376441 2725.57 591 597 137.9
C 15 214 213556 1544.35 591 597 137.9
C 0 207 197795 1430.05 591 597 137.9
D 7 80 3064981 23236.77 535 522 131.9
D 7 223 507646 3845.35 535 522 131.9
D 2 152 174728 1320.95 535 522 131.9

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