ASTROSAT CZTI

Data Quality Report

Orbit 58996

Creation date: 2026-08-23T17:41:00.817194
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_004T07_9000006598_58996cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58996cztM0_level2_quad_clean.evt
Size (bytes)808,087,68086,688,000
Size770.7 MB 82.7 MB
Events in quadrant A4,335,321676,590
Events in quadrant B5,456,668657,588
Events in quadrant C5,659,921580,782
Events in quadrant D13,916,018220,659

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175940
B0210290
C0215740
D0460220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70232052.918980%
B702390612.900470%
C702387712.487541%
D7023479968.332621%

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 7023 7023 31 31 0.44% 0.44%
B 7023 7023 548 548 7.80% 7.80%
C 7023 7023 722 722 10.28% 10.28%
D 7022 7022 4262 4262 60.69% 60.69%

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 0 24 665631 3367.82 801 777 197.4
A 14 238 292151 1475.95 801 777 197.4
A 15 233 206043 1039.77 801 777 197.4
B 6 255 1791075 11084.23 754 726 161.5
B 3 238 185701 1145.2 754 726 161.5
B 10 247 125058 769.75 754 726 161.5
C 15 219 2477468 12270.36 740 732 201.8
C 13 3 90939 446.91 740 732 201.8
C 13 16 32609 157.93 740 732 201.8
D 12 110 11147638 75603.83 510 484 147.4
D 8 160 571224 3870.96 510 484 147.4
D 5 32 39665 265.74 510 484 147.4

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

TCT plots

Parameter TCT0 TCT_healed
Tct