ASTROSAT CZTI

Data Quality Report

Orbit 37240

Creation date: 2024-06-27T21:37:19.219859
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/AS1A10_123T11_9000005286_37240cztM0_level2.evt modeM0/AS1A10_123T11_9000005286_37240cztM0_level2_quad_clean.evt
Size (bytes)641,174,40080,971,200
Size611.5 MB 77.2 MB
Events in quadrant A4,967,853480,565
Events in quadrant B4,426,010511,064
Events in quadrant C3,798,856512,877
Events in quadrant D5,762,276470,080

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0192663
B0177492
C0155162
D0218962

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68494596.701708%
B68491822.657322%
C6849650.949044%
D68495508.030369%

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 9896 6851 278 278 2.81% 4.06%
B 9896 6851 83 83 0.84% 1.21%
C 9896 6851 45 45 0.45% 0.66%
D 9896 6850 429 429 4.34% 6.26%

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 15 237 1033444 5384.4 909 894 191.8
A 10 83 317983 1653.51 909 894 191.8
A 13 248 50777 260.12 909 894 191.8
B 0 190 285297 1716.47 860 839 165.7
B 5 172 191415 1149.97 860 839 165.7
B 0 155 166019 996.73 860 839 165.7
C 15 214 291834 1498.45 821 829 194.2
C 0 10 141958 726.71 821 829 194.2
C 14 254 110093 562.63 821 829 194.2
D 2 249 834453 3888.93 853 831 214.4
D 10 253 462929 2155.73 853 831 214.4
D 12 235 145852 676.54 853 831 214.4

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