ASTROSAT CZTI

Data Quality Report

Orbit 35222

Creation date: 2022-04-03T23:54:12.530507
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/AS1C07_004T01_9000005052_35222cztM0_level2.evt modeM0/AS1C07_004T01_9000005052_35222cztM0_level2_quad_clean.evt
Size (bytes)812,833,92063,256,320
Size775.2 MB 60.3 MB
Events in quadrant A2,632,994437,811
Events in quadrant B9,027,750285,691
Events in quadrant C3,298,445420,877
Events in quadrant D9,283,724380,725

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114723
B0306392
C0133912
D0314042

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A555370.126058%
B5553263847.505853%
C55531542.773276%
D5554116520.975873%

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 7196 5554 0 0 0.00% 0.00%
B 7195 5553 2029 2029 28.20% 36.54%
C 7196 5554 127 127 1.76% 2.29%
D 7197 5555 1650 1650 22.93% 29.70%

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 105121 801.99 643 631 130.3
A 9 143 16080 118.58 643 631 130.3
A 13 6 12838 93.69 643 631 130.3
B 5 236 4996884 51790.93 504 492 96.5
B 5 172 1947924 20186.43 504 492 96.5
B 4 232 80961 834.11 504 492 96.5
C 0 10 351281 2460.4 609 612 142.5
C 15 214 228932 1601.96 609 612 142.5
C 0 207 177435 1240.64 609 612 142.5
D 8 195 5841409 39193.14 597 581 149.0
D 1 47 425612 2852.04 597 581 149.0
D 13 249 229067 1533.19 597 581 149.0

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