ASTROSAT CZTI

Data Quality Report

Orbit 25904

Creation date: 2024-06-27T19:22:38.327814
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/AS1A07_068T01_9000003756_25904cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25904cztM0_level2_quad_clean.evt
Size (bytes)1,282,723,200181,696,320
Size1.2 GB 173.3 MB
Events in quadrant A14,813,5521,110,892
Events in quadrant B6,960,1731,183,803
Events in quadrant C6,663,5991,130,744
Events in quadrant D9,469,8271,113,174

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0535460
B0293850
C0285090
D0374730

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1395413639.767809%
B139551881.347187%
C139551741.246865%
D139556234.464350%

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 16144 13956 846 846 5.24% 6.06%
B 16145 13958 55 55 0.34% 0.39%
C 16145 13958 0 0 0.00% 0.00%
D 16145 13958 477 477 2.95% 3.42%

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 13 8404036 25297.23 1662 1629 332.1
A 13 254 17967 49.19 1662 1629 332.1
A 3 137 15533 41.86 1662 1629 332.1
B 5 172 237523 736.28 1685 1644 320.4
B 10 245 65565 199.53 1685 1644 320.4
B 12 111 40833 122.33 1685 1644 320.4
C 14 238 258707 679.41 1622 1632 378.4
C 3 233 86183 223.45 1622 1632 378.4
C 13 61 11189 25.26 1622 1632 378.4
D 1 52 2829513 7328.36 1616 1578 385.9
D 7 238 464641 1199.99 1616 1578 385.9
D 2 234 55794 140.5 1616 1578 385.9

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