ASTROSAT CZTI

Data Quality Report

Orbit 50182

Creation date: 2025-01-07T14:04:51.682339
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/AS1C09_003T01_9000006442_50182cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50182cztM0_level2_quad_clean.evt
Size (bytes)3,998,229,120124,755,840
Size3.7 GB 119.0 MB
Events in quadrant A44,180,707312,775
Events in quadrant B15,101,2561,683,249
Events in quadrant C43,783,242122,758
Events in quadrant D43,500,830362,679

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01438442
B0579902
C01428542
D01420722

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03820
B03820
C03820
D03820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A187811570883.637719%
B18782198910.589927%
C187811760093.711730%
D187811483278.973431%

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 19661 18784 14449 14449 73.49% 76.92%
B 19662 18785 1211 1211 6.16% 6.45%
C 19661 18784 14666 14666 74.59% 78.08%
D 19661 18783 13930 13930 70.85% 74.16%

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 6 250 19203016 70664.16 1066 1037 271.7
A 0 98 16691376 61421.21 1066 1037 271.7
A 8 8 802669 2950.04 1066 1037 271.7
B 4 206 3184482 8037.81 1876 1812 396.0
B 3 249 2317471 5848.18 1876 1812 396.0
B 8 128 209944 525.63 1876 1812 396.0
C 4 111 10784708 50560.69 702 693 213.3
C 15 197 6899611 32345.47 702 693 213.3
C 15 213 6690206 31363.68 702 693 213.3
D 15 168 10719918 32899.77 1048 1008 325.8
D 7 61 6596570 20243.89 1048 1008 325.8
D 12 6 3857595 11837.1 1048 1008 325.8

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