ASTROSAT CZTI

Data Quality Report

Orbit 53197

Creation date: 2025-07-29T14:03:34.092331
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_011T06_9000006490_53197cztM0_level2.fits modeM0/AS1C09_011T06_9000006490_53197cztM0_level2_quad_clean.evt
Size (bytes)992,730,24065,387,520
Size946.7 MB 62.4 MB
Events in quadrant A3,451,815590,028
Events in quadrant B5,282,428584,673
Events in quadrant C11,503,554283,391
Events in quadrant D16,021,86380,707

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148301
B0202431
C0384311
D0517392

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63151081.710214%
B631668910.908803%
C6316344254.496517%
D6315545586.381631%

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 6995 6316 70 70 1.00% 1.11%
B 6996 6316 490 490 7.00% 7.76%
C 6995 6315 3402 3402 48.63% 53.87%
D 6994 6314 5572 5572 79.67% 88.25%

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 8 337964 2132.87 640 624 158.2
A 4 77 201116 1267.63 640 624 158.2
A 3 62 118024 742.27 640 624 158.2
B 2 249 2115658 16059.3 612 592 131.7
B 4 81 282317 2139.09 612 592 131.7
B 8 234 115885 875.4 612 592 131.7
C 0 240 5921893 44888.34 478 474 131.9
C 1 241 1606820 12177.18 478 474 131.9
C 15 224 1411915 10699.67 478 474 131.9
D 10 117 8044346 101412.89 271 257 79.3
D 15 125 5992067 75539.54 271 257 79.3
D 2 62 460312 5799.97 271 257 79.3

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