ASTROSAT CZTI

Data Quality Report

Orbit 57656

Creation date: 2026-05-25T14:09:19.215386
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_125T09_9000006578_57656cztM0_level2.fits modeM0/AS1A14_125T09_9000006578_57656cztM0_level2_quad_clean.evt
Size (bytes)355,734,72091,264,320
Size339.3 MB 87.0 MB
Events in quadrant A2,776,684600,264
Events in quadrant B2,939,929648,533
Events in quadrant C3,595,347568,864
Events in quadrant D3,395,090532,211

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125271
B0128751
C0147631
D0140431

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5921470.793785%
B5921811.368012%
C59211582.668468%
D59221151.941912%

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 7076 5922 12 12 0.17% 0.20%
B 7076 5922 18 18 0.25% 0.30%
C 7076 5922 95 95 1.34% 1.60%
D 7077 5923 68 68 0.96% 1.15%

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 7 223 163025 1009.55 657 642 160.8
A 4 3 51407 315.61 657 642 160.8
A 13 248 9776 56.79 657 642 160.8
B 5 185 243458 1764.99 651 626 137.6
B 5 172 62947 452.97 651 626 137.6
B 10 247 30092 214.17 651 626 137.6
C 15 224 848000 4886.67 639 634 173.4
C 6 223 165830 952.67 639 634 173.4
C 14 254 31153 176.0 639 634 173.4
D 8 240 311286 1732.25 637 609 179.3
D 2 120 121708 675.22 637 609 179.3
D 11 224 120525 668.62 637 609 179.3

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