ASTROSAT CZTI

Data Quality Report

Orbit 04760

Creation date: 2024-06-27T14:46:27.524340
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_195T01_9000000598_04760cztM0_level2.evt modeM0/AS1G05_195T01_9000000598_04760cztM0_level2_quad_clean.evt
Size (bytes)350,251,20058,242,240
Size334.0 MB 55.5 MB
Events in quadrant A2,310,373357,207
Events in quadrant B2,599,973354,978
Events in quadrant C2,668,220352,938
Events in quadrant D2,683,642343,084

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104691
B0111561
C0115361
D0116651

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5062551.086527%
B5062671.323588%
C50621122.212564%
D5062941.856974%

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 6267 5063 1 1 0.02% 0.02%
B 6267 5063 12 12 0.19% 0.24%
C 6267 5063 51 51 0.81% 1.01%
D 6267 5063 36 36 0.57% 0.71%

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 0 118 13835 109.72 590 578 120.8
A 13 251 8980 69.54 590 578 120.8
A 8 15 8342 64.26 590 578 120.8
B 14 167 79576 683.37 594 580 115.6
B 4 80 63088 540.74 594 580 115.6
B 15 204 59031 505.64 594 580 115.6
C 14 48 269254 2066.48 559 562 130.0
C 1 16 209307 1605.43 559 562 130.0
C 13 61 4772 32.38 559 562 130.0
D 13 235 277897 2050.78 561 543 135.2
D 11 132 152178 1121.2 561 543 135.2
D 2 234 62510 458.19 561 543 135.2

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