ASTROSAT CZTI

Data Quality Report

Orbit 58647

Creation date: 2026-07-31T06:26:21.096316
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/AS1A14_004T06_9000006594_58647cztM0_level2.fits modeM0/AS1A14_004T06_9000006594_58647cztM0_level2_quad_clean.evt
Size (bytes)645,632,640109,399,680
Size615.7 MB 104.3 MB
Events in quadrant A4,582,651729,966
Events in quadrant B4,156,394797,488
Events in quadrant C3,948,022723,425
Events in quadrant D10,609,022521,245

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0191644
B0178492
C0173554
D0369094

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77732623.370642%
B77741632.096733%
C77741371.762285%
D7774211727.231798%

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 8839 7776 203 203 2.30% 2.61%
B 8839 7776 83 83 0.94% 1.07%
C 8840 7777 64 64 0.72% 0.82%
D 8840 7776 1903 1903 21.53% 24.47%

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 10 17 1003611 4806.59 850 831 208.6
A 0 24 101492 482.5 850 831 208.6
A 3 14 69038 326.93 850 831 208.6
B 0 186 218654 1196.71 848 815 182.0
B 5 185 201222 1100.94 848 815 182.0
B 4 158 120580 657.93 848 815 182.0
C 12 252 212084 915.94 841 834 230.6
C 15 217 171433 739.68 841 834 230.6
C 14 254 94058 404.2 841 834 230.6
D 11 129 4675578 22309.63 737 704 209.5
D 8 240 1329975 6343.6 737 704 209.5
D 2 249 1069148 5098.87 737 704 209.5

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