ASTROSAT CZTI

Data Quality Report

Orbit 58697

Creation date: 2026-08-03T17:11:45.525791
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_58697cztM0_level2.fits modeM0/AS1A14_004T06_9000006594_58697cztM0_level2_quad_clean.evt
Size (bytes)1,325,571,840180,002,880
Size1.2 GB 171.7 MB
Events in quadrant A7,251,8641,289,142
Events in quadrant B16,256,3091,067,625
Events in quadrant C7,374,0241,251,648
Events in quadrant D17,128,387896,184

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310883
B05780511
C0314973
D0602903

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02780
B02780
C02780
D02780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A136823062.236515%
B13682372427.218243%
C136832812.053643%
D13683355425.973836%

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 15892 13684 57 57 0.36% 0.42%
B 15893 13685 2113 2113 13.30% 15.44%
C 15893 13686 122 122 0.77% 0.89%
D 15893 13685 2895 2895 18.22% 21.15%

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 12 114 802970 2141.65 1521 1479 374.2
A 10 17 198249 525.79 1521 1479 374.2
A 10 251 173331 459.2 1521 1479 374.2
B 5 172 9583408 32442.25 1373 1317 295.4
B 10 44 427660 1443.48 1373 1317 295.4
B 12 0 241701 813.87 1373 1317 295.4
C 14 254 481442 1189.11 1485 1470 403.6
C 12 252 297723 733.95 1485 1470 403.6
C 13 3 225717 555.56 1485 1470 403.6
D 11 129 7775242 20986.42 1299 1237 370.4
D 2 249 1468829 3961.86 1299 1237 370.4
D 8 160 992653 2676.39 1299 1237 370.4

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