ASTROSAT CZTI

Data Quality Report

Orbit 41367

Creation date: 2024-06-27T22:28:11.608495
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_41367cztM0_level2.fits modeM0/AS1A12_035T01_9000005660_41367cztM0_level2_quad_clean.evt
Size (bytes)1,014,744,960243,970,560
Size967.7 MB 232.7 MB
Events in quadrant A8,421,4041,653,619
Events in quadrant B7,756,6121,684,540
Events in quadrant C8,100,2401,579,285
Events in quadrant D12,072,8481,389,936

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0343885
B0336154
C0341224
D0466054

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03180
B03180
C03180
D03180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0470

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15642410.262115%
B15642890.568981%
C156423202.045774%
D1564212598.048843%

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 19850 15645 13 13 0.07% 0.08%
B 19850 15645 49 49 0.25% 0.31%
C 19850 15645 311 311 1.57% 1.99%
D 19850 15645 1164 1164 5.86% 7.44%

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 1366582 3899.12 1708 1672 350.1
A 12 189 380615 1082.52 1708 1672 350.1
A 2 79 45998 126.63 1708 1672 350.1
B 5 255 357518 1087.51 1692 1647 327.2
B 0 190 272445 827.53 1692 1647 327.2
B 0 186 186581 565.14 1692 1647 327.2
C 0 10 826783 2156.37 1646 1657 382.6
C 15 214 655507 1708.76 1646 1657 382.6
C 15 111 192497 498.74 1646 1657 382.6
D 1 52 3342175 8490.04 1608 1562 393.5
D 13 249 934467 2370.94 1608 1562 393.5
D 5 222 812000 2059.69 1608 1562 393.5

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