ASTROSAT CZTI

Data Quality Report

Orbit 38764

Creation date: 2024-06-27T21:56:07.871771
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/AS1A12_051T01_9000005394_38764cztM0_level2.fits modeM0/AS1A12_051T01_9000005394_38764cztM0_level2_quad_clean.evt
Size (bytes)371,401,92092,352,960
Size354.2 MB 88.1 MB
Events in quadrant A2,801,018633,816
Events in quadrant B2,492,170659,395
Events in quadrant C2,760,878610,749
Events in quadrant D5,286,278525,331

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115133
B0107862
C0112872
D0193512

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5240190.362595%
B5240210.400763%
C5240240.458015%
D52404949.427481%

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 7153 5241 13 13 0.18% 0.25%
B 7153 5241 12 12 0.17% 0.23%
C 7153 5241 15 15 0.21% 0.29%
D 7153 5241 541 541 7.56% 10.32%

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 10 83 385097 3178.39 595 584 121.0
A 13 248 106959 879.3 595 584 121.0
A 13 254 7715 58.94 595 584 121.0
B 4 171 95290 816.66 600 584 116.0
B 0 190 14360 118.79 600 584 116.0
B 12 111 14327 118.51 600 584 116.0
C 15 214 233299 1690.48 587 592 137.7
C 15 208 114346 826.35 587 592 137.7
C 14 254 54893 394.46 587 592 137.7
D 2 16 2713752 19971.42 559 543 135.9
D 5 222 232288 1705.83 559 543 135.9
D 10 118 173937 1276.32 559 543 135.9

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