ASTROSAT CZTI

Data Quality Report

Orbit 29745

Creation date: 2024-06-27T20:07:21.537410
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_007T01_9000004276_29745cztM0_level2.evt modeM0/AS1A10_007T01_9000004276_29745cztM0_level2_quad_clean.evt
Size (bytes)550,048,32074,162,880
Size524.6 MB 70.7 MB
Events in quadrant A3,216,112470,724
Events in quadrant B5,211,012473,134
Events in quadrant C3,548,453454,063
Events in quadrant D4,288,602440,585

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133011
B0194421
C0143041
D0168231

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5821911.563305%
B58211682.886102%
C58211682.886102%
D58211602.748669%

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 7096 5821 0 0 0.00% 0.00%
B 7096 5821 8 8 0.11% 0.14%
C 7096 5821 31 31 0.44% 0.53%
D 7096 5821 82 82 1.16% 1.41%

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 11565 65.38 828 815 164.4
A 12 96 11552 65.3 828 815 164.4
A 12 16 8275 45.37 828 815 164.4
B 6 159 1760820 11477.2 819 801 153.3
B 0 229 197508 1282.74 819 801 153.3
B 3 209 18573 115.89 819 801 153.3
C 10 22 159819 875.27 790 798 181.7
C 14 238 131466 719.21 790 798 181.7
C 3 233 97601 532.82 790 798 181.7
D 8 195 749839 4050.06 795 779 185.0
D 7 80 313979 1693.43 795 779 185.0
D 1 52 161824 870.75 795 779 185.0

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