ASTROSAT CZTI

Data Quality Report

Orbit 13936

Creation date: 2024-06-27T16:48:09.567881
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_041T01_9000002058_13936cztM0_level2.evt modeM0/AS1T02_041T01_9000002058_13936cztM0_level2_quad_clean.evt
Size (bytes)656,375,040109,258,560
Size626.0 MB 104.2 MB
Events in quadrant A3,073,811732,591
Events in quadrant B3,362,572741,154
Events in quadrant C4,130,589743,741
Events in quadrant D8,882,357647,971

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134723
B0142162
C0163692
D0308112

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6343620.977455%
B6343831.308529%
C63432123.342267%
D6343156624.688633%

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 7529 6344 0 0 0.00% 0.00%
B 7529 6344 13 13 0.17% 0.20%
C 7529 6344 153 153 2.03% 2.41%
D 7528 6343 1490 1490 19.79% 23.49%

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 21255 128.78 790 773 159.0
A 1 178 7595 42.89 790 773 159.0
A 0 226 6999 39.15 790 773 159.0
B 0 230 86919 587.75 792 774 146.6
B 0 189 37510 250.64 792 774 146.6
B 0 244 29257 194.33 792 774 146.6
C 4 254 898412 5054.26 778 784 177.6
C 3 233 189488 1062.53 778 784 177.6
C 14 234 6943 34.68 778 784 177.6
D 1 52 5486214 32594.33 716 700 168.3
D 12 110 409972 2431.85 716 700 168.3
D 10 157 91252 538.05 716 700 168.3

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