ASTROSAT CZTI

Data Quality Report

Orbit 58627

Creation date: 2026-07-29T21:17:57.709477
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_004T06_9000006594_58627cztM0_level2.fits modeM0/AS1A14_004T06_9000006594_58627cztM0_level2_quad_clean.evt
Size (bytes)559,581,12086,126,400
Size533.7 MB 82.1 MB
Events in quadrant A2,879,438611,748
Events in quadrant B4,609,024611,777
Events in quadrant C8,458,529435,805
Events in quadrant D4,297,207525,816

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128351
B0178951
C0292911
D0170821

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6049671.107621%
B60504968.198347%
C6050180629.851240%
D60504667.702479%

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 7139 6050 15 15 0.21% 0.25%
B 7140 6051 287 287 4.02% 4.74%
C 7140 6051 1573 1573 22.03% 26.00%
D 7140 6051 312 312 4.37% 5.16%

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 10 251 87868 518.39 680 661 168.2
A 6 195 38086 222.47 680 661 168.2
A 8 43 30431 176.96 680 661 168.2
B 4 171 602569 4346.92 649 625 138.5
B 6 255 535827 3864.94 649 625 138.5
B 8 234 429032 3093.73 649 625 138.5
C 13 3 2676692 17054.84 571 565 156.9
C 15 217 2052245 13075.27 571 565 156.9
C 12 254 1084959 6910.8 571 565 156.9
D 2 249 762243 4220.12 644 616 180.5
D 8 160 538665 2981.29 644 616 180.5
D 8 240 272587 1506.97 644 616 180.5

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