ASTROSAT CZTI

Data Quality Report

Orbit 01786

Creation date: 2024-06-27T14:12:41.052218
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/AS1G02_020T01_9000000296_01786cztM0_level2.evt modeM0/AS1G02_020T01_9000000296_01786cztM0_level2_quad_clean.evt
Size (bytes)1,157,780,16097,096,320
Size1.1 GB 92.6 MB
Events in quadrant A8,809,883618,054
Events in quadrant B8,696,213628,510
Events in quadrant C8,193,296607,368
Events in quadrant D8,895,171593,499

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B110
C1-1-1
D1-1-1

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03123610
B0308561
C0292871
D03151410

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A707140.056569%
B707350.070691%
C707350.070691%
D70711472.078914%

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 7448 7073 248 248 3.33% 3.51%
B 7448 7074 216 216 2.90% 3.05%
C 7448 7074 166 166 2.23% 2.35%
D 7448 7073 488 488 6.55% 6.90%

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 0 231 440778 838.09 2180 2192 523.3
A 13 9 16247 26.86 2180 2192 523.3
A 10 2 13241 21.11 2180 2192 523.3
B 0 220 69616 125.93 2275 2281 534.7
B 15 85 10163 14.74 2275 2281 534.7
B 4 52 6596 8.07 2275 2281 534.7
C 15 246 23068 35.94 2088 2168 581.5
C 10 82 13409 19.33 2088 2168 581.5
C 14 48 8865 11.52 2088 2168 581.5
D 7 85 369354 585.42 2023 2093 627.3
D 13 169 250882 396.57 2023 2093 627.3
D 7 204 228153 360.34 2023 2093 627.3

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