ASTROSAT CZTI

Data Quality Report

Orbit 20160108_G02_011T01_9000000254_level2

Creation date: 2025-10-25T18:47:59.448270
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/AS1G02_011T01_9000000254cztM0_level2.fits modeM0/AS1G02_011T01_9000000254cztM0_level2_quad_clean.evt
Size (bytes)115,303,680126,282,240
Size110.0 MB 120.4 MB
Events in quadrant A702,314818,964
Events in quadrant B686,552819,100
Events in quadrant C680,034774,498
Events in quadrant D523,146512,649

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0567470
B0583210
C0549550
D0762070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02660
B02660
C02660
D02660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A130061431.099493%
B130061421.091804%
C130061040.799631%
D13006279021.451638%

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 16366 13003 0 0 0.00% 0.00%
B 16366 13003 0 0 0.00% 0.00%
C 16366 13003 0 0 0.00% 0.00%
D 16366 12970 0 0 0.00% 0.00%

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 14 188 659 10.95 182 170 44.7
A 0 29 637 10.46 182 170 44.7
A 7 110 579 9.16 182 170 44.7
B 2 9 531 10.12 181 172 35.5
B 5 232 450 7.84 181 172 35.5
B 5 225 447 7.75 181 172 35.5
C 9 242 461 6.28 179 166 47.0
C 1 81 446 5.96 179 166 47.0
C 12 241 432 5.66 179 166 47.0
D 6 231 398 7.12 149 137 36.7
D 11 82 395 7.03 149 137 36.7
D 15 30 370 6.35 149 137 36.7

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