ASTROSAT CZTI

Data Quality Report

Orbit 15804

Creation date: 2024-06-27T17:13:45.486803
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/AS1T02_097T01_9000002340_15804cztM0_level2.evt modeM0/AS1T02_097T01_9000002340_15804cztM0_level2_quad_clean.evt
Size (bytes)469,080,00091,874,880
Size447.3 MB 87.6 MB
Events in quadrant A3,607,901583,402
Events in quadrant B3,256,841613,506
Events in quadrant C3,211,325587,354
Events in quadrant D3,710,342566,507

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147433
B0135382
C0133992
D0150932

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61801933.122977%
B6180410.663430%
C6180470.760518%
D61801792.896440%

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 7441 6182 106 106 1.42% 1.71%
B 7441 6182 14 14 0.19% 0.23%
C 7441 6182 6 6 0.08% 0.10%
D 7441 6182 143 143 1.92% 2.31%

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 15 239 646899 4221.43 763 750 153.1
A 14 254 24348 154.17 763 750 153.1
A 0 226 6719 39.0 763 750 153.1
B 4 173 49733 335.52 780 764 145.9
B 0 229 30483 203.63 780 764 145.9
B 0 219 27448 182.83 780 764 145.9
C 7 247 167919 969.81 741 746 172.4
C 14 238 114541 660.15 741 746 172.4
C 10 22 35571 202.03 741 746 172.4
D 7 223 763412 3953.95 730 714 192.9
D 10 70 71273 365.79 730 714 192.9
D 2 152 34447 174.87 730 714 192.9

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