ASTROSAT CZTI

Data Quality Report

Orbit 58450

Creation date: 2026-07-18T01:19:49.771160
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_045T01_9000006590_58450cztM0_level2.fits modeM0/AS1A14_045T01_9000006590_58450cztM0_level2_quad_clean.evt
Size (bytes)431,726,40096,744,960
Size411.7 MB 92.3 MB
Events in quadrant A2,981,478642,667
Events in quadrant B3,564,995682,605
Events in quadrant C4,143,838579,297
Events in quadrant D4,768,865556,812

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138712
B0152652
C0171503
D0187972

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6705470.700969%
B67051201.789709%
C67044767.100239%
D67054005.965697%

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 7650 6705 3 3 0.04% 0.04%
B 7650 6705 44 44 0.58% 0.66%
C 7649 6704 362 362 4.73% 5.40%
D 7650 6705 333 333 4.35% 4.97%

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 36192 194.73 734 715 182.2
A 12 80 33683 180.96 734 715 182.2
A 3 14 22630 120.29 734 715 182.2
B 5 172 206294 1323.24 725 699 155.4
B 0 156 69774 444.58 725 699 155.4
B 10 247 67422 429.44 725 699 155.4
C 1 12 1129766 5994.25 688 684 188.4
C 13 3 152570 806.36 688 684 188.4
C 4 5 43449 227.04 688 684 188.4
D 8 240 1196133 6008.8 695 663 199.0
D 2 249 477251 2395.48 695 663 199.0
D 2 31 120334 601.5 695 663 199.0

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