ASTROSAT CZTI

Data Quality Report

Orbit 00916

Creation date: 2024-06-27T14:04:40.456134
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/AS1P01_161T02_9000000184_00916cztM0_level2.evt modeM0/AS1P01_161T02_9000000184_00916cztM0_level2_quad_clean.evt
Size (bytes)1,237,766,40090,961,920
Size1.2 GB 86.7 MB
Events in quadrant A8,950,520569,115
Events in quadrant B9,806,229562,708
Events in quadrant C9,202,749552,761
Events in quadrant D9,022,662540,676

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320330
B0345240
C0327080
D0322150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A760840.052576%
B7608560.736067%
C760940.052569%
D7609550.722828%

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 7608 7608 246 246 3.23% 3.23%
B 7608 7608 491 491 6.45% 6.45%
C 7609 7609 279 279 3.67% 3.67%
D 7609 7609 363 363 4.77% 4.77%

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 39919 67.39 2322 2336 557.7
A 11 79 9090 12.11 2322 2336 557.7
A 3 111 7250 8.81 2322 2336 557.7
B 3 0 213495 366.93 2441 2448 575.2
B 7 221 101511 172.23 2441 2448 575.2
B 0 182 95407 161.62 2441 2448 575.2
C 15 241 379201 605.34 2239 2317 622.6
C 3 111 33434 49.98 2239 2317 622.6
C 3 79 26582 38.97 2239 2317 622.6
D 12 188 495769 737.59 2143 2222 669.1
D 1 4 445809 662.93 2143 2222 669.1
D 13 73 36216 50.8 2143 2222 669.1

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