ASTROSAT CZTI

Data Quality Report

Orbit 23285

Creation date: 2024-06-27T18:52:22.221723
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/AS1C05_012T03_9000003442_23285cztM0_level2.evt modeM0/AS1C05_012T03_9000003442_23285cztM0_level2_quad_clean.evt
Size (bytes)443,062,080117,889,920
Size422.5 MB 112.4 MB
Events in quadrant A2,853,440804,541
Events in quadrant B2,934,575814,901
Events in quadrant C3,010,453771,206
Events in quadrant D4,202,949751,799

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125081
B0127181
C0128981
D0167301

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6134490.798826%
B6134540.880339%
C6135931.515892%
D61352514.091280%

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 7154 6134 0 0 0.00% 0.00%
B 7154 6134 4 4 0.06% 0.07%
C 7155 6135 23 23 0.32% 0.37%
D 7155 6135 176 176 2.46% 2.87%

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 10103 62.64 738 721 149.8
A 6 16 7329 44.12 738 721 149.8
A 0 226 6537 38.83 738 721 149.8
B 5 172 72398 518.28 727 709 138.3
B 12 111 16944 117.37 727 709 138.3
B 11 111 14848 102.22 727 709 138.3
C 10 9 143288 880.93 696 698 161.9
C 14 238 111815 686.49 696 698 161.9
C 0 207 15373 90.66 696 698 161.9
D 7 238 530384 3090.0 705 684 171.4
D 1 52 505248 2943.37 705 684 171.4
D 1 239 281320 1637.09 705 684 171.4

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