ASTROSAT CZTI

Data Quality Report

Orbit 52542

Creation date: 2025-06-15T10:06:27.465537
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/AS1C09_011T06_9000006478_52542cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52542cztM0_level2_quad_clean.evt
Size (bytes)682,329,60090,069,120
Size650.7 MB 85.9 MB
Events in quadrant A3,590,044633,097
Events in quadrant B4,750,099654,896
Events in quadrant C5,224,186580,991
Events in quadrant D11,170,452387,211

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157692
B0188862
C0204403
D0378762

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67481462.163604%
B67484536.713100%
C67475468.092486%
D6747253237.527790%

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 7898 6749 97 97 1.23% 1.44%
B 7898 6749 237 237 3.00% 3.51%
C 7897 6748 410 410 5.19% 6.08%
D 7896 6747 2402 2402 30.42% 35.60%

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 3 46 204891 1174.76 691 674 173.8
A 12 80 178599 1023.51 691 674 173.8
A 6 233 96147 549.21 691 674 173.8
B 10 44 583475 4070.72 676 654 143.2
B 0 213 470641 3282.63 676 654 143.2
B 4 81 195073 1357.92 676 654 143.2
C 13 3 1003358 5533.81 650 644 181.2
C 15 248 995399 5489.89 650 644 181.2
C 12 254 296559 1633.11 650 644 181.2
D 6 42 4616932 28890.29 557 534 159.8
D 12 17 1873998 11724.49 557 534 159.8
D 8 176 1051576 6577.62 557 534 159.8

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