ASTROSAT CZTI

Data Quality Report

Orbit 53355

Creation date: 2025-08-09T03:30:38.937217
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_53355cztM0_level2.fits modeM0/AS1C09_011T08_9000006492_53355cztM0_level2_quad_clean.evt
Size (bytes)752,944,32079,182,720
Size718.1 MB 75.5 MB
Events in quadrant A3,470,307629,080
Events in quadrant B4,908,621646,016
Events in quadrant C14,415,643116,831
Events in quadrant D4,582,539561,293

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149752
B0191722
C0471092
D0182522

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63641822.859837%
B63645228.202388%
C6364532283.626650%
D63643335.232558%

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 7528 6364 100 100 1.33% 1.57%
B 7528 6364 283 283 3.76% 4.45%
C 7528 6364 5193 5193 68.98% 81.60%
D 7528 6364 302 302 4.01% 4.75%

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 15 174 351393 2109.26 672 657 166.3
A 8 6 234356 1405.42 672 657 166.3
A 0 8 93509 558.4 672 657 166.3
B 4 206 1043148 7443.48 664 640 140.1
B 0 171 365151 2602.6 664 640 140.1
B 4 171 255117 1816.96 664 640 140.1
C 15 178 7747183 91019.33 304 301 85.1
C 15 158 2197572 25816.08 304 301 85.1
C 15 224 1561699 18345.1 304 301 85.1
D 6 239 1104566 5974.65 657 629 184.8
D 2 62 193873 1045.86 657 629 184.8
D 11 245 175508 946.47 657 629 184.8

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