ASTROSAT CZTI

Data Quality Report

Orbit 35550

Creation date: 2022-04-26T09:25:32.294114
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/AS1A11_093T01_9000005090_35550cztM0_level2.evt modeM0/AS1A11_093T01_9000005090_35550cztM0_level2_quad_clean.evt
Size (bytes)745,545,60081,354,240
Size711.0 MB 77.6 MB
Events in quadrant A12,752,62044,476
Events in quadrant B2,894,886694,887
Events in quadrant C3,025,130708,282
Events in quadrant D3,556,064651,342

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0412703
B0118982
C0121602
D0141112

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5170516599.903288%
B51701292.495164%
C51701202.321083%
D51702595.009671%

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 7112 5169 4937 4937 69.42% 95.51%
B 7113 5171 81 81 1.14% 1.57%
C 7113 5171 91 91 1.28% 1.76%
D 7113 5171 185 185 2.60% 3.58%

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 15 169 12406948 711575.61 79 77 17.4
A 10 83 18011 1028.57 79 77 17.4
A 9 143 17140 978.62 79 77 17.4
B 5 172 369033 3137.55 629 612 117.4
B 4 81 23213 192.47 629 612 117.4
B 0 189 16898 138.69 629 612 117.4
C 0 10 298684 2047.07 633 638 145.6
C 15 214 231864 1588.13 633 638 145.6
C 14 67 18520 122.82 633 638 145.6
D 2 153 464289 3181.44 615 601 145.7
D 2 250 294914 2019.33 615 601 145.7
D 10 118 163283 1116.19 615 601 145.7

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