ASTROSAT CZTI

Data Quality Report

Orbit 49661

Creation date: 2024-12-03T15:30:29.902623
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/AS1T05_233T01_9000006438_49661cztM0_level2.fits modeM0/AS1T05_233T01_9000006438_49661cztM0_level2_quad_clean.evt
Size (bytes)1,207,811,52048,767,040
Size1.1 GB 46.5 MB
Events in quadrant A15,084,801288,779
Events in quadrant B4,355,763605,571
Events in quadrant C9,369,75628,985
Events in quadrant D15,428,363119,483

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0489440
B0170890
C0320970
D0500160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6083597298.175242%
B60843816.262327%
C60846084100.000000%
D6083607699.884925%

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 7003 6084 5731 5731 81.84% 94.20%
B 7004 6085 259 259 3.70% 4.26%
C 7004 6084 1018 1018 14.53% 16.73%
D 7003 6084 5587 5587 79.78% 91.83%

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 83 5061352 51540.04 340 328 98.2
A 8 8 2905520 29585.65 340 328 98.2
A 12 50 996750 10147.28 340 328 98.2
B 7 0 745632 5532.0 634 614 134.7
B 4 206 264694 1960.88 634 614 134.7
B 10 44 215495 1595.56 634 614 134.7
C 15 180 3449774 157629.06 48 47 21.9
C 15 163 1119229 51139.01 48 47 21.9
C 15 181 820789 37502.33 48 47 21.9
D 15 40 4276736 51789.98 164 152 82.6
D 9 49 1275832 15448.65 164 152 82.6
D 7 45 1228732 14878.26 164 152 82.6

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