ASTROSAT CZTI

Data Quality Report

Orbit 01360

Creation date: 2024-06-27T14:11:30.891922
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/AS1G04_002T02_9000000230_01360cztM0_level2.evt modeM0/AS1G04_002T02_9000000230_01360cztM0_level2_quad_clean.evt
Size (bytes)1,082,652,48092,842,560
Size1.0 GB 88.5 MB
Events in quadrant A11,268,622531,467
Events in quadrant B7,912,863630,668
Events in quadrant C6,904,997623,428
Events in quadrant D6,303,267605,210

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0379712
B0277801
C0248031
D0230641

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6018141423.496178%
B6018651.080093%
C601880.132935%
D601870.116318%

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 7323 6019 2182 2182 29.80% 36.25%
B 7323 6019 396 396 5.41% 6.58%
C 7323 6019 123 123 1.68% 2.04%
D 7323 6019 97 97 1.32% 1.61%

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 15 127 4772763 12565.19 1592 1605 379.7
A 4 32 197253 515.25 1592 1605 379.7
A 15 233 131510 342.11 1592 1605 379.7
B 8 4 373996 856.93 1872 1878 434.2
B 12 52 128398 291.36 1872 1878 434.2
B 5 191 95901 216.52 1872 1878 434.2
C 15 241 193026 407.82 1705 1762 469.0
C 3 111 17354 33.25 1705 1762 469.0
C 8 208 13746 25.55 1705 1762 469.0
D 10 125 60045 116.48 1619 1673 501.1
D 12 22 56749 109.9 1619 1673 501.1
D 9 53 54064 104.55 1619 1673 501.1

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