ASTROSAT CZTI

Data Quality Report

Orbit 20266

Creation date: 2024-06-27T18:13:14.258326
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_175T01_9000003004_20266cztM0_level2.evt modeM0/AS1A05_175T01_9000003004_20266cztM0_level2_quad_clean.evt
Size (bytes)489,222,72080,867,520
Size466.6 MB 77.1 MB
Events in quadrant A3,692,246510,286
Events in quadrant B3,600,322513,046
Events in quadrant C3,341,785486,653
Events in quadrant D3,737,057482,060

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147542
B0144642
C0137392
D0152282

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65441902.903423%
B65441812.765892%
C65441412.154645%
D65441412.154645%

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 7654 6545 39 39 0.51% 0.60%
B 7654 6545 19 19 0.25% 0.29%
C 7654 6546 0 0 0.00% 0.00%
D 7654 6546 57 57 0.74% 0.87%

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 14 238 170940 988.76 862 845 172.0
A 10 253 142679 824.48 862 845 172.0
A 8 205 22810 127.68 862 845 172.0
B 7 220 137562 848.61 857 837 161.1
B 4 142 39247 238.4 857 837 161.1
B 0 197 27531 165.68 857 837 161.1
C 14 238 130783 689.43 816 825 188.5
C 0 207 16947 85.53 816 825 188.5
C 13 61 5653 25.61 816 825 188.5
D 7 238 289468 1450.66 834 812 199.0
D 11 176 164934 824.81 834 812 199.0
D 1 52 72685 361.2 834 812 199.0

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