ASTROSAT CZTI

Data Quality Report

Orbit 41718

Creation date: 2024-06-27T22:31:58.284742
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_077T12_9000005692_41718cztM0_level2.fits modeM0/AS1A12_077T12_9000005692_41718cztM0_level2_quad_clean.evt
Size (bytes)356,875,20088,211,520
Size340.3 MB 84.1 MB
Events in quadrant A2,880,905604,898
Events in quadrant B2,395,147623,544
Events in quadrant C3,101,904556,813
Events in quadrant D4,419,761514,357

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116202
B0106492
C0123482
D0167982

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5298150.283126%
B529880.151000%
C52982464.643262%
D52983085.813515%

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 7091 5299 3 3 0.04% 0.06%
B 7091 5299 1 1 0.01% 0.02%
C 7091 5299 233 233 3.29% 4.40%
D 7091 5299 253 253 3.57% 4.77%

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 523669 4166.02 609 597 125.6
A 3 137 6824 49.6 609 597 125.6
A 13 254 6216 44.75 609 597 125.6
B 12 111 14966 122.66 602 586 117.2
B 11 111 14011 114.52 602 586 117.2
B 14 111 13857 113.2 602 586 117.2
C 0 10 650735 4840.94 571 573 134.3
C 15 214 215376 1599.37 571 573 134.3
C 14 67 8302 57.55 571 573 134.3
D 12 79 1170129 8378.17 573 557 139.6
D 13 249 560309 4009.75 573 557 139.6
D 2 249 428030 3062.18 573 557 139.6

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