ASTROSAT CZTI

Data Quality Report

Orbit 50796

Creation date: 2025-02-17T19:40:00.494180
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/AS1C07_001T01_9000006450_50796cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50796cztM0_level2_quad_clean.evt
Size (bytes)580,530,24087,451,200
Size553.6 MB 83.4 MB
Events in quadrant A3,855,518588,171
Events in quadrant B4,721,616587,560
Events in quadrant C6,949,476536,619
Events in quadrant D5,484,897504,937

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154161
B0183341
C0250581
D0205891

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61721903.078419%
B617371711.615098%
C61734657.532804%
D61734757.694800%

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 7197 6172 93 93 1.29% 1.51%
B 7198 6173 420 420 5.83% 6.80%
C 7198 6173 353 353 4.90% 5.72%
D 7198 6173 403 403 5.60% 6.53%

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 14 254 342564 2085.01 666 652 164.0
A 4 3 131871 800.19 666 652 164.0
A 8 234 101444 614.64 666 652 164.0
B 4 206 1896445 13993.54 642 620 135.5
B 0 216 75011 549.1 642 620 135.5
B 0 171 38311 278.21 642 620 135.5
C 5 10 2753987 15971.57 633 627 172.4
C 2 207 497342 2881.32 633 627 172.4
C 1 44 281013 1626.45 633 627 172.4
D 2 216 587655 3391.72 626 603 173.1
D 8 48 500915 2890.57 626 603 173.1
D 7 96 401935 2318.71 626 603 173.1

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