ASTROSAT CZTI

Data Quality Report

Orbit 23221

Creation date: 2024-06-27T18:51:29.649578
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_002T02_9000003432_23221cztM0_level2.evt modeM0/AS1C05_002T02_9000003432_23221cztM0_level2_quad_clean.evt
Size (bytes)252,011,52031,682,880
Size240.3 MB 30.2 MB
Events in quadrant A1,401,342197,372
Events in quadrant B1,466,188201,289
Events in quadrant C2,289,544182,145
Events in quadrant D2,286,562181,200

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0602
B0602
C0604
D0604

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06144286
B06299293
C09470776
D09159396

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2763210.760043%
B2762551.991311%
C27292719.930377%
D27512428.796801%

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 3328 2787 0 0 0.00% 0.00%
B 3328 2782 6 6 0.18% 0.22%
C 3292 2751 84 84 2.55% 3.05%
D 3309 2780 194 194 5.86% 6.98%

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 4265 52.2 362 354 74.9
A 3 137 3427 41.02 362 354 74.9
A 0 226 3123 36.96 362 354 74.9
B 10 247 14190 191.17 364 354 72.4
B 0 190 13938 187.69 364 354 72.4
B 3 64 11122 148.78 364 354 72.4
C 2 16 789074 9754.94 336 338 80.9
C 0 10 128445 1584.4 336 338 80.9
C 14 238 53590 658.61 336 338 80.9
D 2 82 381671 4522.2 341 330 84.3
D 1 52 313749 3716.73 341 330 84.3
D 13 172 151925 1797.71 341 330 84.3

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