ASTROSAT CZTI

Data Quality Report

Orbit 37905

Creation date: 2024-06-27T21:45:58.249369
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/AS1T05_059T01_9000005354_37905cztM0_level2.evt modeM0/AS1T05_059T01_9000005354_37905cztM0_level2_quad_clean.evt
Size (bytes)886,340,160126,149,760
Size845.3 MB 120.3 MB
Events in quadrant A6,117,454777,455
Events in quadrant B6,309,016779,511
Events in quadrant C5,586,594785,744
Events in quadrant D8,102,724732,283

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0248184
B0259693
C0232083
D0314753

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10766730.678061%
B107663042.823704%
C10766820.761657%
D107665284.904328%

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 13542 10768 61 61 0.45% 0.57%
B 13542 10768 204 204 1.51% 1.89%
C 13542 10768 64 64 0.47% 0.59%
D 13542 10768 405 405 2.99% 3.76%

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 15 222 713454 2917.14 1204 1180 244.2
A 10 83 648214 2649.94 1204 1180 244.2
A 13 6 43317 172.57 1204 1180 244.2
B 5 172 752185 3293.26 1194 1161 228.0
B 4 232 181803 792.12 1194 1161 228.0
B 0 189 180823 787.82 1194 1161 228.0
C 15 214 447988 1639.98 1172 1179 272.4
C 14 254 208419 760.66 1172 1179 272.4
C 0 10 153411 558.76 1172 1179 272.4
D 1 52 1213108 4338.69 1150 1119 279.3
D 7 223 1041500 3724.36 1150 1119 279.3
D 2 249 440315 1572.24 1150 1119 279.3

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