ASTROSAT CZTI

Data Quality Report

Orbit 34296

Creation date: 2022-02-01T16:37:37.442702
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/AS1T04_086T01_9000004890_34296cztM0_level2.evt modeM0/AS1T04_086T01_9000004890_34296cztM0_level2_quad_clean.evt
Size (bytes)72,820,80014,273,280
Size69.4 MB 13.6 MB
Events in quadrant A348,86896,157
Events in quadrant B449,24896,438
Events in quadrant C388,67293,940
Events in quadrant D967,06887,673

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014420
B017734
C015133
D033824

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0101
C0101
D0101

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71700.000000%
B71591.258741%
C71530.419580%
D716425.865922%

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 717 717 0 0 0.00% 0.00%
B 715 715 3 3 0.42% 0.42%
C 717 716 0 0 0.00% 0.00%
D 716 716 37 37 5.17% 5.17%

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 1307 59.12 89 87 20.6
A 10 83 987 43.61 89 87 20.6
A 13 6 956 42.11 89 87 20.6
B 5 172 40667 2090.87 89 87 19.4
B 4 251 22587 1159.3 89 87 19.4
B 15 85 14263 730.41 89 87 19.4
C 15 214 29748 1302.94 89 90 22.8
C 9 187 3332 142.43 89 90 22.8
C 3 233 1756 73.19 89 90 22.8
D 12 235 495649 21744.69 87 85 22.8
D 8 195 93793 4111.78 87 85 22.8
D 7 38 15939 695.65 87 85 22.8

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