ASTROSAT CZTI

Data Quality Report

Orbit 25009

Creation date: 2024-06-27T19:12:38.893678
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/AS1A07_127T03_9000003662_25009cztM0_level2.evt modeM0/AS1A07_127T03_9000003662_25009cztM0_level2_quad_clean.evt
Size (bytes)205,957,44022,187,520
Size196.4 MB 21.2 MB
Events in quadrant A1,475,151118,067
Events in quadrant B1,493,142119,085
Events in quadrant C1,560,562111,294
Events in quadrant D1,505,352111,501

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A062081
B062541
C065061
D062991

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2958150.507099%
B295880.270453%
C2958290.980392%
D295830.101420%

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 2958 2958 0 0 0.00% 0.00%
B 2958 2958 1 1 0.03% 0.03%
C 2958 2958 0 0 0.00% 0.00%
D 2958 2958 0 0 0.00% 0.00%

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 4468 52.28 382 375 78.3
A 3 137 3497 39.87 382 375 78.3
A 0 226 3323 37.65 382 375 78.3
B 0 190 9732 126.42 377 369 74.1
B 12 111 8458 109.22 377 369 74.1
B 11 111 7843 100.92 377 369 74.1
C 7 247 79062 917.53 361 364 85.8
C 14 238 59078 684.54 361 364 85.8
C 3 233 13939 158.27 361 364 85.8
D 8 195 91842 1000.37 369 358 91.5
D 2 234 13301 141.53 369 358 91.5
D 1 52 10915 115.44 369 358 91.5

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