ASTROSAT CZTI

Data Quality Report

Orbit 11074

Creation date: 2024-06-27T16:07:55.591721
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/AS1G08_075T01_9000001616_11074cztM0_level2.evt modeM0/AS1G08_075T01_9000001616_11074cztM0_level2_quad_clean.evt
Size (bytes)509,307,84085,512,960
Size485.7 MB 81.6 MB
Events in quadrant A3,841,772544,186
Events in quadrant B4,231,374547,511
Events in quadrant C3,093,324541,834
Events in quadrant D3,821,679507,453

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155643
B0167312
C0134222
D0154642

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64291432.224296%
B64293886.035153%
C6429881.368798%
D64292153.344221%

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 7554 6429 0 0 0.00% 0.00%
B 7554 6429 113 113 1.50% 1.76%
C 7554 6430 5 5 0.07% 0.08%
D 7554 6430 105 105 1.39% 1.63%

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 8 15 677565 4097.68 817 802 165.2
A 11 29 11797 66.57 817 802 165.2
A 0 226 7317 39.45 817 802 165.2
B 4 239 1015460 6557.11 805 785 154.7
B 0 214 28701 180.4 805 785 154.7
B 10 16 21031 130.84 805 785 154.7
C 14 234 31800 170.42 785 791 182.0
C 13 61 5720 27.09 785 791 182.0
C 14 67 2316 8.38 785 791 182.0
D 10 253 465389 2506.62 777 755 185.4
D 11 129 237300 1276.12 777 755 185.4
D 8 195 61406 327.2 777 755 185.4

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