ASTROSAT CZTI

Data Quality Report

Orbit 06938

Creation date: 2024-06-27T15:13:26.671587
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/AS1A02_103T01_9000000950_06938cztM0_level2.evt modeM0/AS1A02_103T01_9000000950_06938cztM0_level2_quad_clean.evt
Size (bytes)381,029,76038,355,840
Size363.4 MB 36.6 MB
Events in quadrant A1,065,204289,159
Events in quadrant B1,466,690288,434
Events in quadrant C6,046,416145,078
Events in quadrant D2,783,729251,007

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A052061
B063590
C0197330
D0100420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A259720.077012%
B2597170.654601%
C2597220184.751637%
D259756821.871390%

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 2597 2597 0 0 0.00% 0.00%
B 2597 2597 7 7 0.27% 0.27%
C 2597 2596 2040 2040 78.55% 78.58%
D 2597 2597 565 565 21.76% 21.76%

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 14 3273 52.16 274 270 57.6
A 0 226 2697 42.16 274 270 57.6
A 12 194 2538 39.4 274 270 57.6
B 0 228 281532 5089.41 279 272 55.3
B 4 48 54285 977.37 279 272 55.3
B 0 219 21208 378.84 279 272 55.3
C 9 247 5472448 155116.2 146 147 35.3
C 13 61 1121 27.61 146 147 35.3
C 8 222 624 13.52 146 147 35.3
D 1 20 1567741 25195.21 245 237 62.2
D 8 195 143053 2295.55 245 237 62.2
D 2 136 44942 718.56 245 237 62.2

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