ASTROSAT CZTI

Data Quality Report

Orbit 24303

Creation date: 2024-06-27T19:04:33.461068
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/AS1A07_145T01_9000003594_24303cztM0_level2.evt modeM0/AS1A07_145T01_9000003594_24303cztM0_level2_quad_clean.evt
Size (bytes)604,261,440104,955,840
Size576.3 MB 100.1 MB
Events in quadrant A3,188,302705,375
Events in quadrant B3,262,900740,817
Events in quadrant C5,942,779654,489
Events in quadrant D5,484,587642,680

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133042
B0134592
C0223622
D0204722

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6224390.626607%
B6224600.964010%
C622480312.901671%
D62235168.291821%

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 7574 6225 0 0 0.00% 0.00%
B 7574 6224 0 0 0.00% 0.00%
C 7574 6224 566 566 7.47% 9.09%
D 7573 6224 492 492 6.50% 7.90%

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 3 1 22048 129.73 822 808 163.7
A 13 254 9435 52.69 822 808 163.7
A 0 226 6967 37.62 822 808 163.7
B 12 111 17884 110.36 830 811 154.7
B 11 111 15768 96.68 830 811 154.7
B 14 111 14443 88.12 830 811 154.7
C 2 16 1981916 11281.99 767 775 175.6
C 7 247 804445 4576.66 767 775 175.6
C 14 238 125195 708.53 767 775 175.6
D 1 52 1622262 8711.59 768 747 186.1
D 9 1 701819 3766.51 768 747 186.1
D 8 195 184766 988.64 768 747 186.1

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