ASTROSAT CZTI

Data Quality Report

Orbit 14252

Creation date: 2024-06-27T16:52:29.524434
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/AS1G08_069T01_9000002102_14252cztM0_level2.evt modeM0/AS1G08_069T01_9000002102_14252cztM0_level2_quad_clean.evt
Size (bytes)783,342,720126,414,720
Size747.1 MB 120.6 MB
Events in quadrant A5,077,202822,769
Events in quadrant B5,121,735804,668
Events in quadrant C5,043,894771,630
Events in quadrant D7,799,551731,494

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02060
B02060
C02060
D02060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0216532
B0217912
C0212622
D0304792

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10070370.367428%
B100701231.221450%
C10070210.208540%
D100704854.816286%

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 11001 10073 5 5 0.05% 0.05%
B 11001 10073 37 37 0.34% 0.37%
C 11001 10073 0 0 0.00% 0.00%
D 11001 10073 415 415 3.77% 4.12%

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 12 189 193321 782.3 1217 1192 245.6
A 9 143 128241 517.31 1217 1192 245.6
A 8 6 37693 148.62 1217 1192 245.6
B 10 244 161341 687.0 1207 1177 233.1
B 0 229 131216 557.79 1207 1177 233.1
B 4 48 42424 176.92 1207 1177 233.1
C 3 233 432636 1582.09 1176 1182 272.7
C 8 128 15816 53.66 1176 1182 272.7
C 13 61 8593 27.17 1176 1182 272.7
D 8 195 1591628 5893.0 1137 1111 269.9
D 5 222 1073898 3974.76 1137 1111 269.9
D 1 3 438085 1619.02 1137 1111 269.9

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