ASTROSAT CZTI

Data Quality Report

Orbit 11462

Creation date: 2024-06-27T16:13:14.953273
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_021T03_9000001678_11462cztM0_level2.evt modeM0/AS1A04_021T03_9000001678_11462cztM0_level2_quad_clean.evt
Size (bytes)706,731,84099,299,520
Size674.0 MB 94.7 MB
Events in quadrant A3,620,929666,446
Events in quadrant B5,987,530630,581
Events in quadrant C3,316,611692,050
Events in quadrant D8,027,515552,429

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148753
B0223932
C0139792
D0284102

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66691321.979307%
B666984912.730544%
C6669751.124606%
D6669143821.562453%

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 9125 6672 4 4 0.04% 0.06%
B 9125 6671 468 468 5.13% 7.02%
C 9125 6672 0 0 0.00% 0.00%
D 9125 6672 1142 1142 12.52% 17.12%

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 14 254 79385 444.01 881 865 176.8
A 9 143 45744 253.78 881 865 176.8
A 1 162 32252 177.49 881 865 176.8
B 3 64 1371947 8854.35 833 813 154.9
B 4 239 1000060 6452.82 833 813 154.9
B 15 204 154317 991.28 833 813 154.9
C 13 61 6080 26.71 850 857 195.5
C 14 234 4264 17.43 850 857 195.5
C 3 202 2124 6.48 850 857 195.5
D 1 52 4333321 23636.59 774 755 183.3
D 10 253 307822 1675.22 774 755 183.3
D 2 120 188358 1023.48 774 755 183.3

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