ASTROSAT CZTI

Data Quality Report

Orbit 18619

Creation date: 2024-06-27T17:52:28.073302
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/AS1A05_176T03_9000002778_18619cztM0_level2.evt modeM0/AS1A05_176T03_9000002778_18619cztM0_level2_quad_clean.evt
Size (bytes)374,065,92067,121,280
Size356.7 MB 64.0 MB
Events in quadrant A2,710,432409,170
Events in quadrant B2,584,405423,469
Events in quadrant C2,961,110409,709
Events in quadrant D2,695,580402,585

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118261
B0113241
C0124671
D0118421

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5538571.029252%
B5539290.523560%
C55391703.069146%
D5539360.649937%

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 5798 5539 28 28 0.48% 0.51%
B 5799 5540 0 0 0.00% 0.00%
C 5799 5540 94 94 1.62% 1.70%
D 5799 5540 38 38 0.66% 0.69%

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 9 143 157344 1173.95 657 644 133.5
A 0 13 15428 110.75 657 644 133.5
A 13 254 8128 56.06 657 644 133.5
B 12 111 15723 117.27 658 640 128.6
B 11 111 13987 103.77 658 640 128.6
B 14 111 11994 88.28 658 640 128.6
C 9 54 380714 2569.02 629 634 147.9
C 14 238 96746 649.63 629 634 147.9
C 3 233 13521 87.11 629 634 147.9
D 14 34 183130 1163.37 642 623 156.9
D 1 52 59725 376.74 642 623 156.9
D 2 234 22095 136.87 642 623 156.9

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