ASTROSAT CZTI

Data Quality Report

Orbit 22540

Creation date: 2024-06-27T18:42:32.922439
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_049T01_9000003344_22540cztM0_level2.evt modeM0/AS1A07_049T01_9000003344_22540cztM0_level2_quad_clean.evt
Size (bytes)523,739,52086,425,920
Size499.5 MB 82.4 MB
Events in quadrant A3,301,060539,086
Events in quadrant B3,487,836550,136
Events in quadrant C3,417,593524,120
Events in quadrant D5,168,928504,933

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146022
B0150173
C0147862
D0201232

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7170210.292887%
B7169650.906682%
C7169500.697447%
D71692433.389594%

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 7905 7170 0 0 0.00% 0.00%
B 7904 7170 6 6 0.08% 0.08%
C 7904 7170 0 0 0.00% 0.00%
D 7903 7168 193 193 2.44% 2.69%

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 13 254 11955 64.45 854 835 172.5
A 3 137 7436 38.26 854 835 172.5
A 0 226 7368 37.87 854 835 172.5
B 15 33 96698 584.79 856 832 163.9
B 0 229 21476 125.93 856 832 163.9
B 12 111 19851 116.02 856 832 163.9
C 14 238 130069 662.94 827 834 194.9
C 0 207 46355 233.51 827 834 194.9
C 0 10 12561 60.16 827 834 194.9
D 1 52 1503543 7555.94 820 795 198.9
D 7 223 316057 1585.16 820 795 198.9
D 2 136 119951 599.13 820 795 198.9

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