ASTROSAT CZTI

Data Quality Report

Orbit 20210709_A10_113T01_9000004524_level2

Creation date: 2025-12-27T09:58:44.467499
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/AS1A10_113T01_9000004524cztM0_level2.fits modeM0/AS1A10_113T01_9000004524cztM0_level2_quad_clean.evt
Size (bytes)278,706,240234,282,240
Size265.8 MB 223.4 MB
Events in quadrant A1,740,1041,359,364
Events in quadrant B1,614,6961,331,780
Events in quadrant C1,653,4921,268,468
Events in quadrant D1,479,9501,181,618

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05800
B05800
C05800
D05800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0582720
B0864690
C0623580
D0686080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A283951240.436697%
B283954471.574221%
C283956372.243353%
D283952480.873393%

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 32455 28395 0 0 0.00% 0.00%
B 32455 28395 0 0 0.00% 0.00%
C 32455 28395 0 0 0.00% 0.00%
D 32455 28395 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 0 29 1718 11.47 453 426 112.6
A 0 30 1390 8.56 453 426 112.6
A 7 110 1365 8.34 453 426 112.6
B 2 9 1337 10.67 427 408 87.1
B 2 8 1110 8.06 427 408 87.1
B 3 17 1099 7.94 427 408 87.1
C 9 209 1177 6.85 437 408 112.2
C 3 126 1156 6.66 437 408 112.2
C 12 241 1154 6.65 437 408 112.2
D 7 3 1062 5.99 422 384 113.1
D 6 231 1062 5.99 422 384 113.1
D 6 67 1025 5.66 422 384 113.1

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