ASTROSAT CZTI

Data Quality Report

Orbit 24912

Creation date: 2024-06-27T19:11:21.906210
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/AS1A08_003T16_9000003650_24912cztM0_level2.evt modeM0/AS1A08_003T16_9000003650_24912cztM0_level2_quad_clean.evt
Size (bytes)483,033,60071,631,360
Size460.7 MB 68.3 MB
Events in quadrant A3,245,607449,330
Events in quadrant B3,313,440460,302
Events in quadrant C3,961,662423,078
Events in quadrant D3,692,010408,072

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130262
B0132552
C0159562
D0150042

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6136270.440026%
B6135600.977995%
C6135921.499593%
D6135400.651997%

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 7476 6137 2 2 0.03% 0.03%
B 7475 6136 0 0 0.00% 0.00%
C 7475 6136 1 1 0.01% 0.02%
D 7475 6136 19 19 0.25% 0.31%

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 10011 55.58 839 825 165.3
A 3 137 7435 39.99 839 825 165.3
A 0 226 7169 38.38 839 825 165.3
B 12 111 18711 114.29 836 818 156.6
B 11 111 16870 102.53 836 818 156.6
B 14 111 16017 97.08 836 818 156.6
C 7 247 739173 4058.64 789 798 181.9
C 14 238 131826 720.22 789 798 181.9
C 0 10 11442 58.51 789 798 181.9
D 1 52 471851 2438.35 793 772 193.2
D 2 244 108117 555.63 793 772 193.2
D 8 195 67477 345.27 793 772 193.2

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