ASTROSAT CZTI

Data Quality Report

Orbit 22426

Creation date: 2024-06-27T18:41:14.263161
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/AS1T03_149T06_9000003326_22426cztM0_level2.evt modeM0/AS1T03_149T06_9000003326_22426cztM0_level2_quad_clean.evt
Size (bytes)295,819,20054,702,720
Size282.1 MB 52.2 MB
Events in quadrant A2,113,712337,738
Events in quadrant B2,175,292345,204
Events in quadrant C2,130,384327,864
Events in quadrant D2,225,943322,565

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0940
D0940

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A093721
B094691
C093821
D098381

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4591390.849488%
B4592551.197735%
C4592811.763937%
D4592380.827526%

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 4976 4592 0 0 0.00% 0.00%
B 4977 4593 0 0 0.00% 0.00%
C 4977 4593 0 0 0.00% 0.00%
D 4977 4593 15 15 0.30% 0.33%

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 15 174 19182 168.68 542 528 110.6
A 13 254 6141 50.76 542 528 110.6
A 3 137 4779 38.44 542 528 110.6
B 0 244 43970 414.86 538 523 104.7
B 3 64 14767 136.01 538 523 104.7
B 12 111 12676 116.04 538 523 104.7
C 14 238 84373 674.17 525 526 124.4
C 13 61 3511 24.0 525 526 124.4
C 15 78 1312 6.32 525 526 124.4
D 13 104 91223 696.41 533 515 130.3
D 1 52 51071 388.14 533 515 130.3
D 2 153 26915 202.69 533 515 130.3

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