ASTROSAT CZTI

Data Quality Report

Orbit 10796

Creation date: 2024-06-27T16:04:00.492700
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/AS1A03_071T01_9000001562_10796cztM0_level2.evt modeM0/AS1A03_071T01_9000001562_10796cztM0_level2_quad_clean.evt
Size (bytes)513,967,68065,724,480
Size490.2 MB 62.7 MB
Events in quadrant A3,435,073384,278
Events in quadrant B4,413,364385,539
Events in quadrant C3,257,564391,777
Events in quadrant D4,015,142371,355

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143933
B0174462
C0138072
D0162202

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65531181.800702%
B65533214.898520%
C6553761.159774%
D65531532.334808%

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 7768 6553 4 4 0.05% 0.06%
B 7768 6553 127 127 1.63% 1.94%
C 7768 6554 0 0 0.00% 0.00%
D 7768 6554 46 46 0.59% 0.70%

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 8 15 67708 390.78 859 843 171.1
A 15 174 27183 153.94 859 843 171.1
A 14 254 16384 90.83 859 843 171.1
B 4 239 914951 5742.9 848 830 159.2
B 0 219 82426 512.62 848 830 159.2
B 0 214 65347 405.32 848 830 159.2
C 13 61 6294 28.48 834 841 191.5
C 5 207 2551 8.93 834 841 191.5
C 8 222 2306 7.65 834 841 191.5
D 13 138 224601 1133.87 830 808 197.4
D 13 104 198109 999.65 830 808 197.4
D 8 195 182952 922.85 830 808 197.4

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