ASTROSAT CZTI

Data Quality Report

Orbit 52652

Creation date: 2025-06-23T17:11:35.788648
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_011T07_9000006480_52652cztM0_level2.fits modeM0/AS1C09_011T07_9000006480_52652cztM0_level2_quad_clean.evt
Size (bytes)798,085,44089,665,920
Size761.1 MB 85.5 MB
Events in quadrant A3,896,318652,366
Events in quadrant B7,241,581615,032
Events in quadrant C8,683,063488,215
Events in quadrant D9,176,488467,539

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162592
B0264162
C0306952
D0322182

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70501512.141844%
B7050109515.531915%
C7050176825.078014%
D7050178325.290780%

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 7910 7050 60 60 0.76% 0.85%
B 7909 7049 748 748 9.46% 10.61%
C 7909 7049 1345 1345 17.01% 19.08%
D 7909 7049 1614 1614 20.41% 22.90%

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 11 7 181630 967.96 739 721 186.9
A 3 14 166654 887.83 739 721 186.9
A 5 240 107342 570.48 739 721 186.9
B 10 128 2252184 15295.81 699 675 147.2
B 10 254 860592 5841.91 699 675 147.2
B 12 32 215596 1460.08 699 675 147.2
C 15 158 4252887 23815.34 642 637 178.6
C 15 233 559972 3132.64 642 637 178.6
C 13 3 353803 1977.96 642 637 178.6
D 8 176 3453956 18700.12 642 615 184.7
D 1 7 913024 4940.77 642 615 184.7
D 12 3 594425 3215.53 642 615 184.7

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