ASTROSAT CZTI

Data Quality Report

Orbit 17325

Creation date: 2024-06-27T17:35:01.077297
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/AS1A05_169T01_9000002558_17325cztM0_level2.evt modeM0/AS1A05_169T01_9000002558_17325cztM0_level2_quad_clean.evt
Size (bytes)445,250,88090,757,440
Size424.6 MB 86.6 MB
Events in quadrant A3,225,719598,529
Events in quadrant B3,329,975603,933
Events in quadrant C3,332,402560,833
Events in quadrant D3,180,699557,816

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135312
B0138492
C0139362
D0134352

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6121711.159941%
B6122911.486442%
C61221091.780464%
D6122610.996406%

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 7441 6122 0 0 0.00% 0.00%
B 7442 6123 5 5 0.07% 0.08%
C 7442 6123 0 0 0.00% 0.00%
D 7442 6123 2 2 0.03% 0.03%

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 0 226 7436 39.78 839 824 166.2
A 3 137 5997 31.12 839 824 166.2
A 12 194 5991 31.08 839 824 166.2
B 15 201 54260 342.56 837 819 156.0
B 12 111 18280 111.93 837 819 156.0
B 11 111 16027 97.49 837 819 156.0
C 14 238 126188 682.54 792 801 183.7
C 9 54 75689 407.65 792 801 183.7
C 3 233 41614 222.16 792 801 183.7
D 5 222 100077 517.99 798 779 191.7
D 13 238 22298 112.25 798 779 191.7
D 2 234 21990 110.65 798 779 191.7

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