ASTROSAT CZTI

Data Quality Report

Orbit 40463

Creation date: 2024-06-27T22:16:25.582694
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_022T01_9000005540_40463cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40463cztM0_level2_quad_clean.evt
Size (bytes)286,819,20083,764,800
Size273.5 MB 79.9 MB
Events in quadrant A2,660,343585,280
Events in quadrant B2,350,804597,689
Events in quadrant C2,426,738562,482
Events in quadrant D2,779,253432,634

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111753
B0103752
C0104622
D0119412

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5113140.273812%
B511380.156464%
C511370.136906%
D5113103720.281635%

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 7086 5114 5 5 0.07% 0.10%
B 7086 5114 4 4 0.06% 0.08%
C 7086 5114 3 3 0.04% 0.06%
D 7086 5114 71 71 1.00% 1.39%

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 470402 4125.74 557 546 113.9
A 7 3 13197 111.09 557 546 113.9
A 15 191 12185 102.2 557 546 113.9
B 0 230 77028 713.34 554 538 107.2
B 3 112 44950 414.19 554 538 107.2
B 4 170 26071 238.12 554 538 107.2
C 15 214 221148 1740.35 545 547 126.8
C 14 254 63593 497.38 545 547 126.8
C 0 10 11126 83.46 545 547 126.8
D 12 191 219107 1830.55 485 473 119.4
D 2 250 213641 1784.79 485 473 119.4
D 12 227 158307 1321.49 485 473 119.4

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