ASTROSAT CZTI

Data Quality Report

Orbit 51463

Creation date: 2025-04-03T18:36:34.475485
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/AS1A13_090T01_9000006458_51463cztM0_level2.fits modeM0/AS1A13_090T01_9000006458_51463cztM0_level2_quad_clean.evt
Size (bytes)1,630,632,960222,491,520
Size1.5 GB 212.2 MB
Events in quadrant A17,784,6781,354,243
Events in quadrant B11,215,5751,639,610
Events in quadrant C10,243,8411,446,360
Events in quadrant D19,781,4951,104,366

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0647713
B0453923
C0432353
D0706454

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03500
B03500
C03500
D03500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17307294917.039348%
B173078975.182874%
C172159525.530061%
D17306382722.113718%

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 19542 17310 2089 2089 10.69% 12.07%
B 19542 17310 428 428 2.19% 2.47%
C 19542 17219 652 652 3.34% 3.79%
D 19541 17308 3612 3612 18.48% 20.87%

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 7 64 4152827 9744.1 1740 1696 426.0
A 12 250 2294369 5381.68 1740 1696 426.0
A 12 3 1182160 2770.95 1740 1696 426.0
B 0 171 806595 2099.85 1804 1744 383.3
B 4 206 750206 1952.73 1804 1744 383.3
B 8 234 590731 1536.66 1804 1744 383.3
C 4 12 1518309 3183.53 1753 1733 476.4
C 13 3 683253 1430.62 1753 1733 476.4
C 12 250 273932 571.39 1753 1733 476.4
D 6 42 7525666 17024.4 1587 1529 442.0
D 10 199 2440041 5517.47 1587 1529 442.0
D 0 129 1532465 3463.95 1587 1529 442.0

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