ASTROSAT CZTI

Data Quality Report

Orbit 41371

Creation date: 2024-06-27T22:28:14.355682
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_035T01_9000005660_41371cztM0_level2.fits modeM0/AS1A12_035T01_9000005660_41371cztM0_level2_quad_clean.evt
Size (bytes)331,355,52090,360,000
Size316.0 MB 86.2 MB
Events in quadrant A2,840,370619,570
Events in quadrant B2,962,970631,851
Events in quadrant C3,103,693567,148
Events in quadrant D2,949,333549,939

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116363
B0121802
C0123892
D0124762

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5254120.228397%
B5254180.342596%
C52542554.853445%
D5254541.027788%

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 7137 5255 3 3 0.04% 0.06%
B 7137 5255 9 9 0.13% 0.17%
C 7137 5255 247 247 3.46% 4.70%
D 7137 5255 57 57 0.80% 1.08%

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 498334 4072.81 597 585 122.2
A 9 240 19355 153.58 597 585 122.2
A 13 254 7076 53.11 597 585 122.2
B 0 229 464852 4039.65 593 576 114.9
B 0 190 72596 626.64 593 576 114.9
B 5 255 53250 458.32 593 576 114.9
C 0 10 673502 5067.89 567 571 132.8
C 15 214 217699 1635.21 567 571 132.8
C 13 61 3641 23.12 567 571 132.8
D 1 52 245456 1711.47 584 567 143.1
D 13 249 167100 1163.86 584 567 143.1
D 1 47 119750 832.94 584 567 143.1

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