ASTROSAT CZTI

Data Quality Report

Orbit 15727

Creation date: 2024-06-27T17:12:44.643845
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/AS1T02_066T01_9000002324_15727cztM0_level2.evt modeM0/AS1T02_066T01_9000002324_15727cztM0_level2_quad_clean.evt
Size (bytes)1,086,793,920178,741,440
Size1.0 GB 170.5 MB
Events in quadrant A6,366,4391,153,609
Events in quadrant B6,735,4061,177,418
Events in quadrant C8,061,6981,109,010
Events in quadrant D10,834,3411,036,733

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0283272
B0287072
C0332532
D0414092

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02740
B02740
C02740
D02740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A135582081.534150%
B135581771.305502%
C135583472.559375%
D1355812449.175395%

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 14549 13561 37 37 0.25% 0.27%
B 14549 13561 7 7 0.05% 0.05%
C 14549 13561 86 86 0.59% 0.63%
D 14549 13561 1005 1005 6.91% 7.41%

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 9 143 138676 430.61 1585 1549 318.4
A 15 239 112716 349.09 1585 1549 318.4
A 15 174 14464 40.56 1585 1549 318.4
B 4 216 99763 323.39 1588 1547 303.7
B 5 65 95801 310.34 1588 1547 303.7
B 4 173 81681 263.85 1588 1547 303.7
C 3 233 1892068 5324.32 1519 1528 355.1
C 14 238 227450 636.26 1519 1528 355.1
C 9 54 13030 32.39 1519 1528 355.1
D 1 52 4841221 12797.14 1490 1451 378.2
D 7 223 79892 207.41 1490 1451 378.2
D 13 172 70809 183.39 1490 1451 378.2

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