ASTROSAT CZTI

Data Quality Report

Orbit 01367

Creation date: 2024-06-27T14:11:38.007419
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/AS1G04_014T02_9000000232_01367cztM0_level2.evt modeM0/AS1G04_014T02_9000000232_01367cztM0_level2_quad_clean.evt
Size (bytes)1,133,968,320102,533,760
Size1.1 GB 97.8 MB
Events in quadrant A8,551,036667,295
Events in quadrant B9,442,214665,916
Events in quadrant C8,241,030648,577
Events in quadrant D7,648,653640,225

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0302972
B0330011
C0294151
D0276681

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6940530.763689%
B69401131.628242%
C6940480.691643%
D6940600.864553%

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 7315 6940 265 265 3.62% 3.82%
B 7315 6940 534 534 7.30% 7.69%
C 7315 6940 223 223 3.05% 3.21%
D 7315 6940 192 192 2.62% 2.77%

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 15 127 176565 333.11 2164 2177 523.5
A 12 243 49638 90.66 2164 2177 523.5
A 4 32 20458 34.92 2164 2177 523.5
B 8 4 365649 695.16 2209 2222 522.8
B 12 52 237176 449.42 2209 2222 522.8
B 5 191 235260 445.75 2209 2222 522.8
C 15 241 233064 406.73 2027 2101 567.9
C 3 79 34841 57.66 2027 2101 567.9
C 3 111 30869 50.66 2027 2101 567.9
D 13 73 69686 108.43 1992 2065 623.6
D 10 125 54574 84.2 1992 2065 623.6
D 1 83 41938 63.94 1992 2065 623.6

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