ASTROSAT CZTI

Data Quality Report

Orbit 41491

Creation date: 2024-06-27T22:29:45.056377
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/AS1A12_035T02_9000005676_41491cztM0_level2.fits modeM0/AS1A12_035T02_9000005676_41491cztM0_level2_quad_clean.evt
Size (bytes)317,206,08084,962,880
Size302.5 MB 81.0 MB
Events in quadrant A2,685,197578,525
Events in quadrant B2,328,035595,274
Events in quadrant C3,230,816533,016
Events in quadrant D3,105,580513,515

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110203
B0104612
C0126622
D0127432

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5030110.218688%
B5030210.417495%
C50303256.461233%
D50301783.538767%

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 7093 5031 3 3 0.04% 0.06%
B 7093 5031 11 11 0.16% 0.22%
C 7093 5031 314 314 4.43% 6.24%
D 7093 5031 157 157 2.21% 3.12%

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 10 83 500988 4414.06 557 545 113.4
A 2 79 15413 131.14 557 545 113.4
A 13 248 12084 101.78 557 545 113.4
B 0 190 90505 840.19 554 538 107.1
B 15 54 40029 368.8 554 538 107.1
B 12 111 13349 119.64 554 538 107.1
C 0 10 730281 5921.11 526 530 123.2
C 14 254 210448 1703.25 526 530 123.2
C 15 214 202450 1638.35 526 530 123.2
D 10 199 315727 2398.32 546 532 131.4
D 12 128 287149 2180.87 546 532 131.4
D 12 6 209678 1591.39 546 532 131.4

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