ASTROSAT CZTI

Data Quality Report

Orbit 35796

Creation date: 2022-05-13T16:20:31.474910
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/AS1A09_029T10_9000005140_35796cztM0_level2.evt modeM0/AS1A09_029T10_9000005140_35796cztM0_level2_quad_clean.evt
Size (bytes)150,557,76026,009,280
Size143.6 MB 24.8 MB
Events in quadrant A1,023,718173,227
Events in quadrant B1,179,889168,620
Events in quadrant C1,065,381161,379
Events in quadrant D1,172,703158,997

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A041352
B045831
C042101
D045981

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A170750.292912%
B1707774.510838%
C1707573.339192%
D1707744.335091%

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 3650 1708 0 0 0.00% 0.00%
B 3650 1708 50 50 1.37% 2.93%
C 3650 1708 42 42 1.15% 2.46%
D 3650 1708 74 74 2.03% 4.33%

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 15 169 78885 1674.82 228 224 47.0
A 10 83 63236 1341.63 228 224 47.0
A 13 6 3543 70.67 228 224 47.0
B 5 255 156845 3608.33 220 215 43.4
B 5 172 96129 2209.6 220 215 43.4
B 4 171 22004 501.96 220 215 43.4
C 0 10 142522 2821.93 212 214 50.4
C 15 214 73150 1446.3 212 214 50.4
C 0 207 19273 377.94 212 214 50.4
D 13 249 148601 2759.17 217 211 53.8
D 12 6 115669 2146.83 217 211 53.8
D 2 250 22907 422.01 217 211 53.8

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