ASTROSAT CZTI

Data Quality Report

Orbit 44265

Creation date: 2024-06-27T23:01:30.960605
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/AS1A13_080T06_9000005982_44265cztM0_level2.fits modeM0/AS1A13_080T06_9000005982_44265cztM0_level2_quad_clean.evt
Size (bytes)720,083,520114,413,760
Size686.7 MB 109.1 MB
Events in quadrant A10,754,327682,455
Events in quadrant B5,018,101800,696
Events in quadrant C3,775,960777,684
Events in quadrant D6,503,686661,650

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0375342
B0202202
C0169702
D0247942

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7788173522.277863%
B77885276.766821%
C77882763.543914%
D778885410.965588%

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 8363 7790 1207 1207 14.43% 15.49%
B 8363 7790 143 143 1.71% 1.84%
C 8363 7790 34 34 0.41% 0.44%
D 8363 7790 545 545 6.52% 7.00%

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 15 223 5277818 30189.79 838 817 174.8
A 10 83 1703805 9742.82 838 817 174.8
A 14 254 279231 1592.81 838 817 174.8
B 0 219 545679 3163.39 869 840 172.2
B 0 200 193134 1116.48 869 840 172.2
B 4 170 158175 913.5 869 840 172.2
C 14 254 240363 1171.41 867 868 204.5
C 5 250 90866 440.19 867 868 204.5
C 3 233 25898 122.43 867 868 204.5
D 1 20 827318 4028.79 829 802 205.2
D 12 1 396805 1930.29 829 802 205.2
D 13 171 361689 1759.12 829 802 205.2

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