ASTROSAT CZTI

Data Quality Report

Orbit 52677

Creation date: 2025-06-24T14:15:33.225274
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_011T07_9000006480_52677cztM0_level2.fits modeM0/AS1C09_011T07_9000006480_52677cztM0_level2_quad_clean.evt
Size (bytes)1,095,888,96082,137,600
Size1.0 GB 78.3 MB
Events in quadrant A4,072,477675,517
Events in quadrant B6,833,409698,890
Events in quadrant C11,547,529439,894
Events in quadrant D17,536,824152,430

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172530
B0255110
C0395270
D0571100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7465831.111855%
B74655166.912257%
C7465263835.338245%
D7465583378.137977%

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 7465 7465 74 74 0.99% 0.99%
B 7465 7465 331 331 4.43% 4.43%
C 7465 7465 2690 2690 36.03% 36.03%
D 7465 7465 5840 5840 78.23% 78.23%

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 14 397576 2098.33 754 734 189.1
A 14 239 123611 649.72 754 734 189.1
A 12 80 88172 462.33 754 734 189.1
B 10 128 935709 5899.9 736 708 158.5
B 12 32 722103 4552.04 736 708 158.5
B 7 0 680057 4286.72 736 708 158.5
C 15 248 5963402 35516.87 608 602 167.9
C 15 157 1559988 9288.34 608 602 167.9
C 9 38 415619 2472.01 608 602 167.9
D 8 176 9971375 89210.85 379 360 111.8
D 2 62 3262600 29187.32 379 360 111.8
D 6 42 1853304 16578.32 379 360 111.8

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