ASTROSAT CZTI

Data Quality Report

Orbit 50235

Creation date: 2025-01-11T01:18:22.864530
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_003T01_9000006442_50235cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50235cztM0_level2_quad_clean.evt
Size (bytes)1,082,157,12079,073,280
Size1.0 GB 75.4 MB
Events in quadrant A6,965,906588,476
Events in quadrant B4,392,938729,705
Events in quadrant C13,543,549287,547
Events in quadrant D14,593,031281,252

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0256311
B0181551
C0452101
D0484631

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7286116916.044469%
B72862563.513588%
C7287437760.065871%
D7287428458.789625%

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 7726 7289 971 971 12.57% 13.32%
B 7726 7289 113 113 1.46% 1.55%
C 7727 7288 3422 3422 44.29% 46.95%
D 7727 7290 4303 4303 55.69% 59.03%

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 98 2220391 12328.07 723 706 180.1
A 11 7 316270 1752.63 723 706 180.1
A 6 250 279721 1549.64 723 706 180.1
B 3 249 270655 1660.41 771 744 162.6
B 10 28 232911 1428.22 771 744 162.6
B 6 36 163321 1000.12 771 744 162.6
C 4 111 3767999 28336.22 473 471 133.0
C 15 213 2162083 16257.85 473 471 133.0
C 15 182 1570912 11811.56 473 471 133.0
D 7 61 7359890 46859.54 559 540 157.1
D 15 108 1562917 9948.2 559 540 157.1
D 15 106 482477 3068.66 559 540 157.1

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