ASTROSAT CZTI

Data Quality Report

Orbit 58816

Creation date: 2026-08-11T14:27:14.931707
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_106T01_9000006596_58816cztM0_level2.fits modeM0/AS1A14_106T01_9000006596_58816cztM0_level2_quad_clean.evt
Size (bytes)671,745,60091,045,440
Size640.6 MB 86.8 MB
Events in quadrant A3,912,100662,428
Events in quadrant B4,269,813692,097
Events in quadrant C3,933,526619,379
Events in quadrant D12,242,799326,654

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158642
B0170312
C0161762
D0408922

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65431852.827449%
B65434697.167966%
C65433234.936573%
D6543327550.053492%

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 7648 6544 60 60 0.78% 0.92%
B 7648 6544 189 189 2.47% 2.89%
C 7648 6544 181 181 2.37% 2.77%
D 7648 6544 3204 3204 41.89% 48.96%

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 10 248 417520 2170.08 771 751 192.1
A 13 248 241296 1252.5 771 751 192.1
A 3 14 190655 988.81 771 751 192.1
B 5 172 381213 2396.19 747 722 158.8
B 4 201 264361 1660.3 747 722 158.8
B 4 236 258313 1622.21 747 722 158.8
C 13 3 681007 3409.49 727 722 199.5
C 9 38 196650 981.96 727 722 199.5
C 6 223 62727 310.76 727 722 199.5
D 12 110 8477736 47624.34 621 592 178.0
D 2 249 1019223 5722.64 621 592 178.0
D 2 31 84931 473.81 621 592 178.0

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