ASTROSAT CZTI

Data Quality Report

Orbit 40092

Creation date: 2024-06-27T22:12:14.030612
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/AS1T05_086T01_9000005518_40092cztM0_level2.fits modeM0/AS1T05_086T01_9000005518_40092cztM0_level2_quad_clean.evt
Size (bytes)858,096,000165,830,400
Size818.3 MB 158.1 MB
Events in quadrant A5,294,7831,216,494
Events in quadrant B4,664,0781,236,088
Events in quadrant C9,437,9921,086,542
Events in quadrant D11,590,785787,971

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02020
B02020
C02020
D02020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0217143
B0205836
C0347988
D0412563

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10026460.458807%
B10024170.169593%
C100239579.548040%
D10026271427.069619%

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 12684 10028 32 32 0.25% 0.32%
B 12684 10027 8 8 0.06% 0.08%
C 12684 10027 924 924 7.28% 9.22%
D 12684 10028 2573 2573 20.29% 25.66%

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 784761 3412.43 1112 1091 229.7
A 13 248 123330 532.28 1112 1091 229.7
A 2 79 69657 298.57 1112 1091 229.7
B 4 171 141734 654.88 1107 1082 214.8
B 0 189 80352 369.08 1107 1082 214.8
B 10 246 40730 184.6 1107 1082 214.8
C 9 187 4666897 18759.09 1053 1065 248.7
C 15 214 398296 1597.08 1053 1065 248.7
C 15 208 151357 604.25 1053 1065 248.7
D 12 227 6007750 26452.04 912 889 227.1
D 2 249 955498 4203.75 912 889 227.1
D 13 249 629690 2769.01 912 889 227.1

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