ASTROSAT CZTI

Data Quality Report

Orbit 53280

Creation date: 2025-08-04T02:09:15.789051
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_011T08_9000006492_53280cztM0_level2.fits modeM0/AS1C09_011T08_9000006492_53280cztM0_level2_quad_clean.evt
Size (bytes)585,400,32091,500,480
Size558.3 MB 87.3 MB
Events in quadrant A3,266,503636,246
Events in quadrant B4,660,867674,839
Events in quadrant C9,088,090442,974
Events in quadrant D4,159,788572,132

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143862
B0181542
C0313672
D0169052

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63721261.977401%
B63722924.582549%
C6372194730.555556%
D63722323.640929%

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 7521 6371 76 76 1.01% 1.19%
B 7521 6371 198 198 2.63% 3.11%
C 7521 6372 1937 1937 25.75% 30.40%
D 7521 6372 170 170 2.26% 2.67%

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 8 137090 788.67 687 671 173.0
A 4 249 119778 688.59 687 671 173.0
A 3 14 78546 450.22 687 671 173.0
B 10 28 601679 4237.81 679 657 141.8
B 2 249 482571 3397.98 679 657 141.8
B 0 213 179348 1259.95 679 657 141.8
C 1 241 3325746 20846.38 580 575 159.5
C 10 22 1156035 7243.89 580 575 159.5
C 15 224 631374 3954.65 580 575 159.5
D 3 12 486249 2516.88 669 637 192.9
D 10 172 221314 1143.75 669 637 192.9
D 8 240 172898 892.81 669 637 192.9

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