ASTROSAT CZTI

Data Quality Report

Orbit 17342

Creation date: 2024-06-27T17:35:13.649485
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/AS1A05_025T16_9000002560_17342cztM0_level2.evt modeM0/AS1A05_025T16_9000002560_17342cztM0_level2_quad_clean.evt
Size (bytes)285,298,56062,573,760
Size272.1 MB 59.7 MB
Events in quadrant A1,953,097410,936
Events in quadrant B2,041,081418,850
Events in quadrant C2,012,846392,596
Events in quadrant D2,352,394382,487

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A085311
B086931
C085941
D098221

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4112210.510700%
B4112431.045720%
C4112400.972763%
D4112741.799611%

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 5222 4113 0 0 0.00% 0.00%
B 5222 4113 2 2 0.04% 0.05%
C 5222 4113 0 0 0.00% 0.00%
D 5222 4113 44 44 0.84% 1.07%

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 0 226 4444 38.34 507 496 103.0
A 3 137 3899 33.04 507 496 103.0
A 12 194 3584 29.99 507 496 103.0
B 4 173 20649 206.41 510 499 97.6
B 0 244 17253 171.62 510 499 97.6
B 12 111 11623 113.95 510 499 97.6
C 14 238 75973 657.37 488 492 114.8
C 3 233 29613 253.62 488 492 114.8
C 13 61 3481 26.03 488 492 114.8
D 5 222 467815 3975.51 484 470 117.6
D 2 152 23331 194.47 484 470 117.6
D 2 234 14644 120.57 484 470 117.6

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