ASTROSAT CZTI

Data Quality Report

Orbit 13035

Creation date: 2024-06-27T16:35:18.949131
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/AS1A04_216T01_9000001916_13035cztM0_level2.evt modeM0/AS1A04_216T01_9000001916_13035cztM0_level2_quad_clean.evt
Size (bytes)1,890,688,320306,403,200
Size1.8 GB 292.2 MB
Events in quadrant A12,467,3132,025,345
Events in quadrant B19,270,4351,782,868
Events in quadrant C9,796,8242,022,298
Events in quadrant D14,218,3011,911,725

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04520
B04520
C04520
D04520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0519683
B0721373
C0452543
D0578013

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A223293581.603296%
B22329436519.548569%
C223291040.465762%
D223297543.376775%

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 23765 22333 114 114 0.48% 0.51%
B 23765 22333 2813 2813 11.84% 12.60%
C 23765 22333 6 6 0.03% 0.03%
D 23765 22333 511 511 2.15% 2.29%

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 8 15 1854322 3578.91 2555 2497 517.4
A 12 189 450159 865.17 2555 2497 517.4
A 1 162 127469 241.53 2555 2497 517.4
B 4 239 9586933 22678.64 2255 2200 422.6
B 3 64 401266 944.24 2255 2200 422.6
B 4 173 164831 384.8 2255 2200 422.6
C 14 234 24774 38.69 2501 2514 575.4
C 13 61 18521 27.82 2501 2514 575.4
C 12 4 12450 17.27 2501 2514 575.4
D 1 52 3633758 6180.51 2454 2378 587.6
D 14 34 747994 1269.02 2454 2378 587.6
D 8 195 449230 760.53 2454 2378 587.6

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