ASTROSAT CZTI

Data Quality Report

Orbit 37404

Creation date: 2024-06-27T21:39:34.593771
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/AS1A09_002T01_9000005322_37404cztM0_level2.evt modeM0/AS1A09_002T01_9000005322_37404cztM0_level2_quad_clean.evt
Size (bytes)423,838,08073,719,360
Size404.2 MB 70.3 MB
Events in quadrant A2,900,084467,231
Events in quadrant B2,852,844477,471
Events in quadrant C2,977,488476,209
Events in quadrant D3,747,764442,460

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116473
B0115222
C0116782
D0145452

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5265140.265907%
B5265370.702754%
C5265571.082621%
D52651352.564103%

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 7328 5266 5 5 0.07% 0.09%
B 7328 5266 17 17 0.23% 0.32%
C 7328 5266 45 45 0.61% 0.85%
D 7328 5266 100 100 1.36% 1.90%

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 10 83 274815 2122.31 654 644 129.2
A 15 222 54736 418.72 654 644 129.2
A 9 143 16705 124.33 654 644 129.2
B 5 172 143689 1189.16 654 640 120.3
B 0 190 47115 386.35 654 640 120.3
B 4 232 27430 222.7 654 640 120.3
C 15 214 224580 1522.76 648 654 147.1
C 0 10 162467 1100.37 648 654 147.1
C 14 254 42660 285.65 648 654 147.1
D 2 249 327857 2140.81 640 624 152.9
D 1 47 194787 1270.24 640 624 152.9
D 12 227 173374 1130.16 640 624 152.9

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