ASTROSAT CZTI

Data Quality Report

Orbit 42976

Creation date: 2024-06-27T22:46:27.914214
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_148T01_9000005838_42976cztM0_level2.fits modeM0/AS1T05_148T01_9000005838_42976cztM0_level2_quad_clean.evt
Size (bytes)465,528,960118,494,720
Size444.0 MB 113.0 MB
Events in quadrant A3,546,244884,052
Events in quadrant B6,885,885677,911
Events in quadrant C3,053,269857,529
Events in quadrant D3,292,693760,601

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142922
B0243022
C0120832
D0133912

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5841220.376648%
B5841163227.940421%
C584050.085616%
D5840791.352740%

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 8885 5843 6 6 0.07% 0.10%
B 8885 5843 1361 1361 15.32% 23.29%
C 8884 5842 0 0 0.00% 0.00%
D 8884 5842 68 68 0.77% 1.16%

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 10 83 620293 3636.27 740 725 170.4
A 15 222 29648 169.75 740 725 170.4
A 15 237 27790 158.85 740 725 170.4
B 4 81 3687276 27392.09 612 598 134.6
B 4 171 495500 3677.13 612 598 134.6
B 0 186 213309 1580.45 612 598 134.6
C 15 214 241145 1286.72 717 718 186.9
C 14 254 6005 28.29 717 718 186.9
C 13 61 4671 21.15 717 718 186.9
D 1 52 176536 915.66 709 684 192.0
D 13 249 164693 853.99 709 684 192.0
D 2 249 91554 473.16 709 684 192.0

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