ASTROSAT CZTI

Data Quality Report

Orbit 31515

Creation date: 2024-06-27T20:29:22.176102
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_119T01_9000004590_31515cztM0_level2.evt modeM0/AS1A10_119T01_9000004590_31515cztM0_level2_quad_clean.evt
Size (bytes)674,775,36071,173,440
Size643.5 MB 67.9 MB
Events in quadrant A5,748,648415,427
Events in quadrant B5,641,752436,300
Events in quadrant C4,202,574421,284
Events in quadrant D4,376,350400,750

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0215353
B0217132
C0167162
D0173602

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A689674410.788863%
B68961552.247680%
C68961872.711717%
D68962423.509281%

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 7761 6896 565 565 7.28% 8.19%
B 7761 6896 7 7 0.09% 0.10%
C 7761 6896 15 15 0.19% 0.22%
D 7761 6897 200 200 2.58% 2.90%

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 0 13 2505702 14787.57 840 824 169.4
A 13 254 12587 69.44 840 824 169.4
A 3 137 8481 45.2 840 824 169.4
B 6 159 1847694 10955.09 871 851 168.6
B 4 80 183264 1082.03 871 851 168.6
B 0 190 94237 553.94 871 851 168.6
C 3 233 508388 2577.1 838 843 196.9
C 0 10 245541 1242.47 838 843 196.9
C 14 238 135479 683.63 838 843 196.9
D 12 233 684575 3431.64 834 814 199.3
D 8 195 296442 1483.69 834 814 199.3
D 12 79 84500 420.0 834 814 199.3

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