ASTROSAT CZTI

Data Quality Report

Orbit 20190821_A05_155T04_9000003114_level2

Creation date: 2025-12-03T06:18:30.158621
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/AS1A05_155T04_9000003114cztM0_level2.fits modeM0/AS1A05_155T04_9000003114cztM0_level2_quad_clean.evt
Size (bytes)423,331,200437,725,440
Size403.7 MB 417.4 MB
Events in quadrant A2,576,4182,684,010
Events in quadrant B2,465,4382,650,495
Events in quadrant C2,520,8882,537,079
Events in quadrant D2,189,8462,317,709

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0917510
B01008330
C0917370
D01070600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0530
B0530
C0530
D0530

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09080
B09080
C09080
D09080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A446946271.402873%
B4469411882.658075%
C446947401.655703%
D4469412572.812458%

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 49869 44694 0 0 0.00% 0.00%
B 49869 44690 0 0 0.00% 0.00%
C 49869 44694 0 0 0.00% 0.00%
D 49869 44690 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 0 29 2384 10.48 670 628 167.5
A 7 110 2103 8.81 670 628 167.5
A 0 30 1944 7.86 670 628 167.5
B 2 9 1938 10.09 651 618 130.7
B 2 8 1689 8.19 651 618 130.7
B 3 17 1686 8.16 651 618 130.7
C 12 241 1838 7.11 665 619 171.4
C 2 191 1747 6.58 665 619 171.4
C 9 209 1744 6.56 665 619 171.4
D 6 231 1575 5.99 625 568 168.1
D 10 113 1531 5.73 625 568 168.1
D 10 189 1526 5.7 625 568 168.1

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