ASTROSAT CZTI

Data Quality Report

Orbit 40697

Creation date: 2024-06-27T22:19:18.482614
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_029T02_9000005558_40697cztM0_level2.fits modeM0/AS1A12_029T02_9000005558_40697cztM0_level2_quad_clean.evt
Size (bytes)439,058,88092,594,880
Size418.7 MB 88.3 MB
Events in quadrant A3,175,263637,004
Events in quadrant B3,255,799648,173
Events in quadrant C5,831,641581,453
Events in quadrant D3,530,329523,526

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128153
B0135442
C0214242
D0143602

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5909190.321543%
B59091161.963107%
C59095609.477069%
D59095799.798612%

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 7253 5910 5 5 0.07% 0.08%
B 7253 5910 74 74 1.02% 1.25%
C 7253 5910 536 536 7.39% 9.07%
D 7253 5910 109 109 1.50% 1.84%

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 542664 4001.08 658 645 135.5
A 12 189 54037 394.13 658 645 135.5
A 6 10 16365 116.04 658 645 135.5
B 0 229 507224 4030.59 649 631 125.7
B 0 190 109755 868.22 649 631 125.7
B 4 171 25943 201.39 649 631 125.7
C 9 187 2894982 19876.63 618 620 145.6
C 15 214 249021 1705.86 618 620 145.6
C 14 254 241502 1654.22 618 620 145.6
D 12 227 248895 1643.74 607 589 151.1
D 2 250 177054 1168.16 607 589 151.1
D 12 191 168676 1112.7 607 589 151.1

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