ASTROSAT CZTI

Data Quality Report

Orbit 04004

Creation date: 2024-06-27T14:36:13.410318
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/AS1G05_247T01_9000000512_04004cztM0_level2.evt modeM0/AS1G05_247T01_9000000512_04004cztM0_level2_quad_clean.evt
Size (bytes)435,021,12093,214,080
Size414.9 MB 88.9 MB
Events in quadrant A4,079,540590,340
Events in quadrant B2,934,121608,559
Events in quadrant C2,551,200608,332
Events in quadrant D3,198,903593,563

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163882
B0128501
C0122391
D0141921

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60365158.532140%
B6036370.612989%
C6036170.281643%
D6036791.308814%

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 6996 6037 364 364 5.20% 6.03%
B 6996 6037 13 13 0.19% 0.22%
C 6996 6037 6 6 0.09% 0.10%
D 6996 6037 50 50 0.71% 0.83%

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 0 50 1463723 11036.42 642 628 132.6
A 0 118 98745 740.12 642 628 132.6
A 0 226 15326 110.87 642 628 132.6
B 14 167 161210 1250.78 669 655 128.4
B 15 204 119726 927.6 669 655 128.4
B 0 183 17262 129.37 669 655 128.4
C 9 144 40710 267.1 641 642 150.0
C 12 4 6567 39.5 641 642 150.0
C 13 61 5337 31.3 641 642 150.0
D 10 246 471388 3042.59 640 620 154.7
D 2 232 138118 888.65 640 620 154.7
D 8 112 52150 333.04 640 620 154.7

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