ASTROSAT CZTI

Data Quality Report

Orbit 14527

Creation date: 2024-06-27T16:56:27.564302
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/AS1T02_049T01_9000002142_14527cztM0_level2.evt modeM0/AS1T02_049T01_9000002142_14527cztM0_level2_quad_clean.evt
Size (bytes)253,742,40058,924,800
Size242.0 MB 56.2 MB
Events in quadrant A2,495,143386,889
Events in quadrant B1,619,523396,886
Events in quadrant C1,642,563396,739
Events in quadrant D1,713,540381,521

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A096082
B068191
C069101
D072941

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0660
B0660
C0660
D0660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3119983.142033%
B3119411.314524%
C3119290.929785%
D3119842.693171%

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 4095 3121 19 19 0.46% 0.61%
B 4095 3121 1 1 0.02% 0.03%
C 4095 3121 0 0 0.00% 0.00%
D 4095 3121 33 33 0.81% 1.06%

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 955544 12176.38 384 375 78.4
A 12 189 39208 495.04 384 375 78.4
A 15 69 14027 174.03 384 375 78.4
B 4 48 40458 534.98 387 376 74.9
B 3 209 13055 169.23 387 376 74.9
B 0 182 11571 149.42 387 376 74.9
C 3 233 171059 1961.68 375 377 87.0
C 0 207 5680 60.95 375 377 87.0
C 13 61 2830 28.19 375 377 87.0
D 12 233 95437 966.54 372 363 98.4
D 2 136 76662 775.67 372 363 98.4
D 10 199 56829 574.05 372 363 98.4

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