ASTROSAT CZTI

Data Quality Report

Orbit 24601

Creation date: 2024-06-27T19:07:46.445831
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/AS1T03_189T01_9000003614_24601cztM0_level2.evt modeM0/AS1T03_189T01_9000003614_24601cztM0_level2_quad_clean.evt
Size (bytes)745,174,080111,836,160
Size710.7 MB 106.7 MB
Events in quadrant A4,038,389719,096
Events in quadrant B4,089,421729,797
Events in quadrant C9,495,785662,626
Events in quadrant D4,373,077688,994

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172292
B0172582
C0339222
D0186152

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8440961.137441%
B84401251.481043%
C8441160419.002488%
D8441590.698969%

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 9866 8442 0 0 0.00% 0.00%
B 9866 8440 0 0 0.00% 0.00%
C 9867 8443 1032 1032 10.46% 12.22%
D 9867 8443 3 3 0.03% 0.04%

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 13 254 12119 52.64 1045 1021 210.8
A 3 137 9839 41.82 1045 1021 210.8
A 0 226 8750 36.66 1045 1021 210.8
B 12 111 25776 123.95 1039 1010 199.8
B 11 111 23220 111.16 1039 1010 199.8
B 14 111 21101 100.56 1039 1010 199.8
C 7 247 5534254 24378.72 967 972 227.0
C 14 238 151693 664.05 967 972 227.0
C 7 226 16237 67.26 967 972 227.0
D 13 104 351476 1408.62 1019 989 248.8
D 1 52 102247 406.96 1019 989 248.8
D 8 195 74529 295.56 1019 989 248.8

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