ASTROSAT CZTI

Data Quality Report

Orbit 01560

Creation date: 2024-06-27T14:12:27.361444
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/AS1G02_019T04_9000000262_01560cztM0_level2.evt modeM0/AS1G02_019T04_9000000262_01560cztM0_level2_quad_clean.evt
Size (bytes)13,593,600855,360
Size13.0 MB 835.3 KB
Events in quadrant A93,7842,277
Events in quadrant B94,4172,074
Events in quadrant C118,2653,453
Events in quadrant D95,1762,355

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01610
B01612
C01612
D0159

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A036423315
B036063274
C034603047
D037583418

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7500.000000%
B7900.000000%
C9600.000000%
D8500.000000%

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 706 133 0 0 0.00% 0.00%
B 707 141 0 0 0.00% 0.00%
C 713 170 1 1 0.14% 0.59%
D 670 144 0 0 0.00% 0.00%

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 5 203 124 12.88 24 24 7.8
A -1 -1 -1 -1.0 24 24 7.8
A -1 -1 -1 -1.0 24 24 7.8
B 0 220 694 91.18 24 24 7.3
B 4 200 312 39.19 24 24 7.3
B 0 190 132 14.7 24 24 7.3
C 8 229 7624 788.95 28 28 9.6
C 8 208 674 67.1 28 28 9.6
C -1 -1 -1 -1.0 28 28 9.6
D 7 85 650 69.83 24 24 9.0
D 13 169 468 49.53 24 24 9.0
D 2 33 416 43.73 24 24 9.0

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