ASTROSAT CZTI

Data Quality Report

Orbit 55582

Creation date: 2026-01-06T01:47:42.729050
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_021T06_9000006538_55582cztM0_level2.fits modeM0/AS1A14_021T06_9000006538_55582cztM0_level2_quad_clean.evt
Size (bytes)493,467,840105,120,000
Size470.6 MB 100.3 MB
Events in quadrant A4,281,965686,994
Events in quadrant B3,656,038742,191
Events in quadrant C5,027,573620,892
Events in quadrant D4,716,902609,693

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179880
B0165130
C0205140
D0195580

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75181341.782389%
B7518300.399042%
C75194305.718846%
D75192263.005719%

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 7518 7518 107 107 1.42% 1.42%
B 7518 7518 14 14 0.19% 0.19%
C 7519 7519 395 395 5.25% 5.25%
D 7519 7519 194 194 2.58% 2.58%

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 12 115 527942 2791.13 765 746 188.9
A 0 8 429201 2268.37 765 746 188.9
A 8 249 142462 750.29 765 746 188.9
B 5 236 391416 2389.01 759 728 163.5
B 4 169 120734 733.82 759 728 163.5
B 0 199 48979 295.05 759 728 163.5
C 13 3 953843 4748.1 731 723 200.7
C 12 2 730840 3637.18 731 723 200.7
C 6 223 200182 993.63 731 723 200.7
D 11 129 1051025 4956.5 743 707 211.9
D 15 125 258610 1217.06 743 707 211.9
D 2 62 84178 393.9 743 707 211.9

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