ASTROSAT CZTI

Data Quality Report

Orbit 09875

Creation date: 2024-06-27T15:51:43.848521
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/AS1A03_117T06_9000001404_09875cztM0_level2.evt modeM0/AS1A03_117T06_9000001404_09875cztM0_level2_quad_clean.evt
Size (bytes)616,656,960103,170,240
Size588.1 MB 98.4 MB
Events in quadrant A4,121,154635,803
Events in quadrant B4,172,675656,573
Events in quadrant C4,916,903624,684
Events in quadrant D4,883,603611,933

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181365
B01811411
C0206998
D0204132

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A85754014.676385%
B85723994.654690%
C85755696.635569%
D85763994.652519%

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 9251 8580 0 0 0.00% 0.00%
B 9251 8580 0 0 0.00% 0.00%
C 9251 8580 169 169 1.83% 1.97%
D 9251 8580 95 95 1.03% 1.11%

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 17728 76.07 1064 1039 219.4
A 0 226 9784 39.86 1064 1039 219.4
A 12 194 8349 33.32 1064 1039 219.4
B 0 85 35742 165.84 1063 1036 209.3
B 12 111 25828 118.46 1063 1036 209.3
B 11 111 21348 97.06 1063 1036 209.3
C 4 254 879519 3644.76 1019 1023 241.0
C 14 234 53129 216.18 1019 1023 241.0
C 13 61 7689 27.66 1019 1023 241.0
D 10 253 509693 1907.19 1021 998 266.7
D 1 52 300936 1124.52 1021 998 266.7
D 10 199 154152 574.2 1021 998 266.7

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