ASTROSAT CZTI

Data Quality Report

Orbit 54648

Creation date: 2025-11-04T05:53:09.075503
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/AS1A14_066T07_9000006522_54648cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54648cztM0_level2_quad_clean.evt
Size (bytes)466,686,72095,696,640
Size445.1 MB 91.3 MB
Events in quadrant A3,144,732646,549
Events in quadrant B3,576,603673,179
Events in quadrant C4,048,567597,341
Events in quadrant D6,005,064531,730

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139362
B0152242
C0166592
D0221942

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6437851.320491%
B64372864.443064%
C64372874.458599%
D643773511.418363%

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 7557 6438 14 14 0.19% 0.22%
B 7557 6438 116 116 1.54% 1.80%
C 7557 6438 153 153 2.02% 2.38%
D 7557 6438 649 649 8.59% 10.08%

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 7 190 180341 988.59 729 711 181.7
A 3 14 30608 164.54 729 711 181.7
A 11 3 29215 156.87 729 711 181.7
B 12 0 391950 2565.67 714 689 152.5
B 10 247 221668 1449.05 714 689 152.5
B 5 172 55181 357.32 714 689 152.5
C 4 5 612875 3179.42 701 695 192.5
C 9 38 192210 994.65 701 695 192.5
C 6 223 184489 954.55 701 695 192.5
D 2 62 1805237 9181.98 682 651 196.5
D 2 172 574565 2920.15 682 651 196.5
D 6 239 501528 2548.53 682 651 196.5

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