ASTROSAT CZTI

Data Quality Report

Orbit 10916

Creation date: 2024-06-27T16:05:36.441596
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_055T02_9000001576_10916cztM0_level2.evt modeM0/AS1A04_055T02_9000001576_10916cztM0_level2_quad_clean.evt
Size (bytes)86,843,52024,399,360
Size82.8 MB 23.3 MB
Events in quadrant A708,790162,655
Events in quadrant B649,220163,810
Events in quadrant C545,190160,944
Events in quadrant D635,321153,359

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0293919
B027776
C0261512
D028052

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A129830.231125%
B1304161.226994%
C130100.000000%
D130640.306279%

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 1307 1307 4 4 0.31% 0.31%
B 1307 1306 7 7 0.54% 0.54%
C 1307 1306 0 0 0.00% 0.00%
D 1307 1307 3 3 0.23% 0.23%

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 13 251 88085 2721.99 148 145 32.3
A 5 112 37250 1148.5 148 145 32.3
A 8 5 6743 204.23 148 145 32.3
B 4 239 50730 1676.88 147 144 30.2
B 11 51 12240 400.97 147 144 30.2
B 0 229 10294 336.46 147 144 30.2
C 7 235 2082 57.21 139 140 33.9
C 13 61 1015 25.78 139 140 33.9
C 3 202 374 6.89 139 140 33.9
D 13 152 34153 949.47 140 136 35.8
D 12 227 10910 300.72 140 136 35.8
D 5 222 9645 265.41 140 136 35.8

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