ASTROSAT CZTI

Data Quality Report

Orbit 13894

Creation date: 2024-06-27T16:47:32.784475
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/AS1A04_010T02_9000002048_13894cztM0_level2.evt modeM0/AS1A04_010T02_9000002048_13894cztM0_level2_quad_clean.evt
Size (bytes)322,606,08052,657,920
Size307.7 MB 50.2 MB
Events in quadrant A2,133,092323,558
Events in quadrant B2,193,569328,210
Events in quadrant C2,330,409324,258
Events in quadrant D2,812,702308,088

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A092072
B092941
C095041
D0114431

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0900
B0900
C0900
D0900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4408521.179673%
B4408541.225045%
C4408400.907441%
D44081222.767695%

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 5694 4409 0 0 0.00% 0.00%
B 5694 4409 0 0 0.00% 0.00%
C 5694 4409 0 0 0.00% 0.00%
D 5694 4409 86 86 1.51% 1.95%

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 1 162 6681 54.03 553 541 113.6
A 0 226 5059 39.76 553 541 113.6
A 12 194 4150 31.76 553 541 113.6
B 12 111 12116 110.07 551 539 105.2
B 0 214 11520 104.4 551 539 105.2
B 15 201 10652 96.15 551 539 105.2
C 3 233 219153 1724.75 540 545 126.7
C 13 61 3790 25.6 540 545 126.7
C 0 207 3584 23.98 540 545 126.7
D 1 52 483905 3836.81 526 517 126.0
D 13 122 137609 1088.14 526 517 126.0
D 5 222 43083 337.86 526 517 126.0

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