ASTROSAT CZTI

Data Quality Report

Orbit 40296

Creation date: 2024-06-27T22:14:39.469921
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_056T02_9000005538_40296cztM0_level2.fits modeM0/AS1A12_056T02_9000005538_40296cztM0_level2_quad_clean.evt
Size (bytes)961,776,000237,971,520
Size917.2 MB 226.9 MB
Events in quadrant A10,216,3511,537,939
Events in quadrant B7,395,9791,653,081
Events in quadrant C7,178,8801,603,189
Events in quadrant D9,689,8611,411,567

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0393974
B0319393
C0300593
D0390343

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02940
B02940
C02940
D02940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A144718245.694147%
B144711030.711768%
C14471530.366250%
D144716094.208417%

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 17095 14473 670 670 3.92% 4.63%
B 17095 14473 48 48 0.28% 0.33%
C 17095 14473 34 34 0.20% 0.23%
D 17095 14473 545 545 3.19% 3.77%

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 13 248 2421758 7498.03 1594 1565 322.8
A 10 83 1082753 3349.64 1594 1565 322.8
A 15 96 271393 835.96 1594 1565 322.8
B 7 202 386907 1255.8 1617 1574 306.8
B 5 255 249721 808.71 1617 1574 306.8
B 4 171 166751 538.31 1617 1574 306.8
C 15 214 601294 1620.28 1594 1608 370.1
C 14 254 318808 857.04 1594 1608 370.1
C 7 247 17165 42.03 1594 1608 370.1
D 12 227 1691967 4394.06 1571 1531 384.7
D 12 233 825681 2142.27 1571 1531 384.7
D 2 250 282286 729.78 1571 1531 384.7

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