ASTROSAT CZTI

Data Quality Report

Orbit 42205

Creation date: 2024-06-27T22:38:31.551779
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/AS1A12_089T01_9000005776_42205cztM0_level2.fits modeM0/AS1A12_089T01_9000005776_42205cztM0_level2_quad_clean.evt
Size (bytes)370,771,20094,656,960
Size353.6 MB 90.3 MB
Events in quadrant A3,198,225639,226
Events in quadrant B3,534,733628,828
Events in quadrant C2,743,266621,768
Events in quadrant D3,780,743557,146

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129272
B0146752
C0120442
D0154803

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6005140.233139%
B60053315.512073%
C600520.033306%
D60042103.497668%

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 7318 6006 7 7 0.10% 0.12%
B 7318 6006 301 301 4.11% 5.01%
C 7318 6006 0 0 0.00% 0.00%
D 7317 6005 181 181 2.47% 3.01%

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 605131 4515.84 650 638 133.9
A 13 248 30183 220.71 650 638 133.9
A 13 6 24879 181.09 650 638 133.9
B 7 202 841307 6826.54 634 616 123.2
B 0 229 69017 555.43 634 616 123.2
B 3 112 66632 536.06 634 616 123.2
C 15 214 251685 1695.78 635 639 148.0
C 7 220 6597 40.25 635 639 148.0
C 15 159 5455 32.53 635 639 148.0
D 1 52 1001053 6531.92 621 601 153.2
D 12 6 115373 749.34 621 601 153.2
D 2 249 84222 545.96 621 601 153.2

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