ASTROSAT CZTI

Data Quality Report

Orbit 53399

Creation date: 2025-08-12T02:45:34.895981
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/AS1C09_011T09_9000006494_53399cztM0_level2.fits modeM0/AS1C09_011T09_9000006494_53399cztM0_level2_quad_clean.evt
Size (bytes)686,629,44087,586,560
Size654.8 MB 83.5 MB
Events in quadrant A3,867,861611,565
Events in quadrant B6,847,084594,655
Events in quadrant C8,910,344447,677
Events in quadrant D5,292,666548,117

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162321
B0249041
C0309041
D0202251

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64423114.827693%
B6442104916.283763%
C6443198330.777588%
D64433605.587459%

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 7502 6443 203 203 2.71% 3.15%
B 7502 6442 623 623 8.30% 9.67%
C 7502 6443 1639 1639 21.85% 25.44%
D 7503 6444 322 322 4.29% 5.00%

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 15 174 704178 4287.97 665 649 164.1
A 3 27 116539 706.34 665 649 164.1
A 7 191 100793 610.37 665 649 164.1
B 2 249 1319065 9833.79 639 618 134.1
B 4 171 1166949 8699.21 639 618 134.1
B 10 28 556596 4146.82 639 618 134.1
C 15 224 2814155 17934.6 575 570 156.9
C 1 241 1582650 10084.64 575 570 156.9
C 14 80 970344 6181.62 575 570 156.9
D 0 18 1273873 6866.38 647 617 185.4
D 8 176 617209 3325.14 647 617 185.4
D 2 153 215227 1157.34 647 617 185.4

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