ASTROSAT CZTI

Data Quality Report

Orbit 58867

Creation date: 2026-08-15T02:04:41.980696
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_004T07_9000006598_58867cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58867cztM0_level2_quad_clean.evt
Size (bytes)1,118,018,88087,471,360
Size1.0 GB 83.4 MB
Events in quadrant A4,875,044725,099
Events in quadrant B13,671,835424,831
Events in quadrant C6,760,511650,964
Events in quadrant D15,489,612316,428

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0196810
B0459362
C0254200
D0512270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76283274.286838%
B7627414054.280844%
C762878810.330362%
D7628448858.835868%

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 7628 7628 270 270 3.54% 3.54%
B 7626 7626 3288 3288 43.12% 43.12%
C 7628 7628 731 731 9.58% 9.58%
D 7628 7628 4515 4515 59.19% 59.19%

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 14 238 975188 4687.79 833 811 207.9
A 3 14 339867 1631.22 833 811 207.9
A 15 233 133197 636.92 833 811 207.9
B 5 172 8994707 60912.04 687 660 147.7
B 2 249 963728 6522.36 687 660 147.7
B 4 236 340830 2303.8 687 660 147.7
C 9 38 2372106 10899.85 793 783 217.6
C 12 252 689680 3166.53 793 783 217.6
C 12 249 201740 923.7 793 783 217.6
D 12 110 12303424 61455.5 697 664 200.2
D 11 129 250904 1250.01 697 664 200.2
D 7 222 77810 385.36 697 664 200.2

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

TCT plots

Parameter TCT0 TCT_healed
Tct