ASTROSAT CZTI

Data Quality Report

Orbit 18673

Creation date: 2024-06-27T17:53:16.703495
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/AS1T03_091T01_9000002790_18673cztM0_level2.evt modeM0/AS1T03_091T01_9000002790_18673cztM0_level2_quad_clean.evt
Size (bytes)275,328,00056,433,600
Size262.6 MB 53.8 MB
Events in quadrant A1,929,334369,284
Events in quadrant B1,971,469377,813
Events in quadrant C1,935,133350,188
Events in quadrant D2,240,207340,257

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A081561
B081891
C081671
D091751

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3840491.276042%
B3840531.380208%
C3840651.692708%
D3840411.067708%

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 5150 3841 2 2 0.04% 0.05%
B 5150 3841 3 3 0.06% 0.08%
C 5150 3841 0 0 0.00% 0.00%
D 5150 3841 22 22 0.43% 0.57%

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 4 2 13103 125.82 494 483 100.3
A 6 16 7774 72.69 494 483 100.3
A 13 254 6445 59.44 494 483 100.3
B 4 80 15446 158.36 496 485 94.5
B 12 111 10863 109.85 496 485 94.5
B 11 111 9535 95.79 496 485 94.5
C 14 238 73601 669.5 467 471 109.2
C 3 233 36550 330.3 467 471 109.2
C 13 61 3273 25.65 467 471 109.2
D 1 52 314658 2746.48 473 458 114.4
D 7 238 118620 1032.88 473 458 114.4
D 2 234 17203 146.37 473 458 114.4

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