ASTROSAT CZTI

Data Quality Report

Orbit 57449

Creation date: 2026-05-11T15:21:20.820270
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_113T09_9000006574_57449cztM0_level2.fits modeM0/AS1A14_113T09_9000006574_57449cztM0_level2_quad_clean.evt
Size (bytes)459,354,24098,383,680
Size438.1 MB 93.8 MB
Events in quadrant A2,941,024655,477
Events in quadrant B3,834,574684,586
Events in quadrant C4,797,869610,715
Events in quadrant D4,905,640557,744

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136911
B0161231
C0188161
D0192211

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6746540.800474%
B67472844.209278%
C67473595.320883%
D67475047.469987%

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 7756 6746 2 2 0.03% 0.03%
B 7757 6747 124 124 1.60% 1.84%
C 7757 6747 210 210 2.71% 3.11%
D 7757 6748 383 383 4.94% 5.68%

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 38143 204.6 744 728 182.9
A 13 254 9316 46.96 744 728 182.9
A 3 137 9026 45.38 744 728 182.9
B 5 185 376610 2427.44 722 694 154.9
B 4 206 228766 1472.75 722 694 154.9
B 7 252 175863 1131.14 722 694 154.9
C 15 224 1410270 7202.19 715 707 195.7
C 1 16 224186 1141.87 715 707 195.7
C 14 254 152290 774.52 715 707 195.7
D 15 142 1401676 6997.15 704 671 200.2
D 2 249 191692 954.03 704 671 200.2
D 8 240 187569 933.44 704 671 200.2

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