ASTROSAT CZTI

Data Quality Report

Orbit 54438

Creation date: 2025-10-21T12:03:35.093911
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_126T19_9000006518_54438cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54438cztM0_level2_quad_clean.evt
Size (bytes)2,239,750,080306,846,720
Size2.1 GB 292.6 MB
Events in quadrant A10,929,1052,255,834
Events in quadrant B11,620,9602,386,830
Events in quadrant C12,779,7202,134,083
Events in quadrant D45,687,470832,729

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04940
B04940
C04940
D04940

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0508014
B0528364
C0556234
D01525737

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A244202461.007371%
B244214751.945047%
C244215072.076082%
D244201480260.614251%

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 25955 24424 49 49 0.19% 0.20%
B 25956 24425 149 149 0.57% 0.61%
C 25956 24425 290 290 1.12% 1.19%
D 25955 24422 12328 12328 47.50% 50.48%

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 11 3 272396 426.09 2583 2526 633.4
A 8 249 211178 329.43 2583 2526 633.4
A 5 243 128653 199.14 2583 2526 633.4
B 10 247 461001 852.58 2541 2448 537.8
B 0 213 216814 398.56 2541 2448 537.8
B 2 249 193533 355.28 2541 2448 537.8
C 13 3 646209 949.47 2497 2475 678.0
C 4 5 547291 803.57 2497 2475 678.0
C 11 244 379521 556.12 2497 2475 678.0
D 8 176 23584562 56865.05 1457 1388 414.7
D 7 70 12876314 31044.73 1457 1388 414.7
D 2 172 1311436 3158.86 1457 1388 414.7

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