ASTROSAT CZTI

Data Quality Report

Orbit 25026

Creation date: 2024-06-27T19:12:55.413515
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_134T03_9000003670_25026cztM0_level2.evt modeM0/AS1A07_134T03_9000003670_25026cztM0_level2_quad_clean.evt
Size (bytes)589,749,120109,077,120
Size562.4 MB 104.0 MB
Events in quadrant A3,311,705731,315
Events in quadrant B3,694,730753,554
Events in quadrant C5,866,328696,249
Events in quadrant D4,572,743693,888

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136731
B0150421
C0219341
D0177591

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6140540.879479%
B6140951.547231%
C61405869.543974%
D61402614.250814%

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 7490 6141 0 0 0.00% 0.00%
B 7490 6141 15 15 0.20% 0.24%
C 7490 6141 337 337 4.50% 5.49%
D 7490 6141 151 151 2.02% 2.46%

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 11 208 15960 88.99 856 841 169.9
A 13 254 8301 43.91 856 841 169.9
A 3 137 7302 38.03 856 841 169.9
B 4 80 189017 1174.81 860 841 160.2
B 7 234 65084 401.08 860 841 160.2
B 7 250 39596 241.95 860 841 160.2
C 7 247 2501107 13153.32 823 834 190.1
C 14 238 130913 684.31 823 834 190.1
C 3 233 8968 42.79 823 834 190.1
D 1 52 788840 3923.38 833 812 200.9
D 8 195 414403 2059.16 833 812 200.9
D 7 238 162143 803.22 833 812 200.9

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