ASTROSAT CZTI

Data Quality Report

Orbit 33823

Creation date: 2024-06-27T20:53:04.978151
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/AS1A11_106T03_9000004826_33823cztM0_level2.evt modeM0/AS1A11_106T03_9000004826_33823cztM0_level2_quad_clean.evt
Size (bytes)1,349,233,920179,680,320
Size1.3 GB 171.4 MB
Events in quadrant A8,261,7441,112,795
Events in quadrant B8,653,1861,142,281
Events in quadrant C8,762,8891,134,569
Events in quadrant D14,190,4201,033,801

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03020
B03020
C03020
D03020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0343424
B0355333
C0353283
D0525323

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A147436864.653056%
B147434833.276131%
C147431390.942820%
D1474310266.959235%

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 19161 14746 646 646 3.37% 4.38%
B 19161 14746 302 302 1.58% 2.05%
C 19161 14746 118 118 0.62% 0.80%
D 19161 14746 860 860 4.49% 5.83%

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 15 169 1755170 5281.59 1670 1637 332.0
A 13 6 42182 122.12 1670 1637 332.0
A 13 254 25158 70.84 1670 1637 332.0
B 5 172 1243303 3875.01 1681 1633 320.4
B 5 255 349799 1086.56 1681 1633 320.4
B 0 190 83088 254.21 1681 1633 320.4
C 3 233 856820 2256.16 1650 1661 379.0
C 15 214 633455 1666.85 1650 1661 379.0
C 14 254 407176 1069.87 1650 1661 379.0
D 8 195 3175276 7963.6 1624 1579 398.5
D 12 235 1656045 4151.47 1624 1579 398.5
D 2 250 1049065 2628.41 1624 1579 398.5

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