ASTROSAT CZTI

Data Quality Report

Orbit 35908

Creation date: 2024-06-27T21:19:51.611627
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/AS1A11_080T01_9000005146_35908cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35908cztM0_level2_quad_clean.evt
Size (bytes)479,704,32077,840,640
Size457.5 MB 74.2 MB
Events in quadrant A2,846,976511,036
Events in quadrant B4,406,648471,691
Events in quadrant C2,908,261504,674
Events in quadrant D3,983,272475,086

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120103
B0168042
C0120382
D0155552

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5636160.283889%
B563657310.166785%
C5636500.887154%
D56361452.572747%

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 7220 5637 12 12 0.17% 0.21%
B 7220 5637 394 394 5.46% 6.99%
C 7220 5637 34 34 0.47% 0.60%
D 7220 5637 122 122 1.69% 2.16%

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 10 83 167096 1256.72 651 638 132.5
A 9 143 67288 503.19 651 638 132.5
A 15 169 50357 375.37 651 638 132.5
B 5 172 1731742 14468.92 620 606 119.6
B 5 255 76153 631.43 620 606 119.6
B 5 63 58923 487.42 620 606 119.6
C 15 214 237630 1610.44 629 634 147.2
C 0 10 168525 1140.85 629 634 147.2
C 0 207 48313 323.99 629 634 147.2
D 8 195 569833 3725.24 622 604 152.8
D 7 223 330477 2158.81 622 604 152.8
D 13 249 173855 1133.82 622 604 152.8

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