ASTROSAT CZTI

Data Quality Report

Orbit 40373

Creation date: 2024-06-27T22:15:23.020373
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/AS1A12_056T02_9000005538_40373cztM0_level2.fits modeM0/AS1A12_056T02_9000005538_40373cztM0_level2_quad_clean.evt
Size (bytes)382,487,04098,697,600
Size364.8 MB 94.1 MB
Events in quadrant A3,628,010691,889
Events in quadrant B3,047,712719,419
Events in quadrant C2,762,439677,503
Events in quadrant D4,307,459529,295

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140663
B0128162
C0112072
D0164372

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52981683.171008%
B5298180.339751%
C5298270.509626%
D5298106320.064175%

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 7331 5299 109 109 1.49% 2.06%
B 7331 5299 6 6 0.08% 0.11%
C 7331 5299 14 14 0.19% 0.26%
D 7331 5299 299 299 4.08% 5.64%

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 13 248 590028 4561.52 643 635 129.2
A 10 83 483717 3738.74 643 635 129.2
A 2 79 47610 363.56 643 635 129.2
B 7 202 363659 3016.67 641 625 120.3
B 3 112 43221 353.96 641 625 120.3
B 4 170 37984 310.44 641 625 120.3
C 15 214 227167 1600.47 621 627 141.5
C 0 10 72836 510.15 621 627 141.5
C 14 254 38036 264.29 621 627 141.5
D 12 227 1301057 9234.83 570 556 140.8
D 2 250 374665 2656.54 570 556 140.8
D 12 191 184140 1303.63 570 556 140.8

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