ASTROSAT CZTI

Data Quality Report

Orbit 24365

Creation date: 2024-06-27T19:05:14.172261
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/AS1A07_145T01_9000003594_24365cztM0_level2.evt modeM0/AS1A07_145T01_9000003594_24365cztM0_level2_quad_clean.evt
Size (bytes)371,727,36056,056,320
Size354.5 MB 53.5 MB
Events in quadrant A2,136,402348,075
Events in quadrant B2,237,100360,302
Events in quadrant C2,450,064342,853
Events in quadrant D4,117,350319,315

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137794279
B0140714362
C0152125330
D0231207787

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022
B022
C044
D033

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013744
B013638
C013646
D013737

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4716120.254453%
B4722170.360017%
C4686300.640205%
D44203838.665158%

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 7109 5092 0 0 0.00% 0.00%
B 7116 5087 2 2 0.03% 0.04%
C 7110 5031 0 0 0.00% 0.00%
D 7109 4854 315 315 4.43% 6.49%

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 13 254 7494 61.76 553 541 112.6
A 3 137 5176 41.17 553 541 112.6
A 0 226 4657 36.56 553 541 112.6
B 5 172 36818 335.91 556 541 108.0
B 0 190 13611 121.02 556 541 108.0
B 12 111 13055 115.87 556 541 108.0
C 7 247 295900 2343.18 530 532 126.1
C 14 238 84917 669.43 530 532 126.1
C 2 16 4553 31.9 530 532 126.1
D 9 35 1209795 9975.72 496 481 121.2
D 7 238 702190 5788.45 496 481 121.2
D 8 195 148628 1222.08 496 481 121.2

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