ASTROSAT CZTI

Data Quality Report

Orbit 55829

Creation date: 2026-01-22T16:53:56.248601
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_127T10_9000006542_55829cztM0_level2.fits modeM0/AS1A14_127T10_9000006542_55829cztM0_level2_quad_clean.evt
Size (bytes)411,949,440103,072,320
Size392.9 MB 98.3 MB
Events in quadrant A3,646,424654,643
Events in quadrant B3,084,266716,588
Events in quadrant C3,361,358642,641
Events in quadrant D4,586,962597,270

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160720
B0148810
C0158200
D0190691

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7325851.160410%
B732650.068250%
C7326400.546001%
D73252002.730375%

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 7325 7325 74 74 1.01% 1.01%
B 7326 7326 2 2 0.03% 0.03%
C 7326 7326 43 43 0.59% 0.59%
D 7325 7325 203 203 2.77% 2.77%

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 4 205 141440 763.64 740 720 184.3
A 15 32 127059 685.6 740 720 184.3
A 4 3 125099 674.96 740 720 184.3
B 0 213 83557 517.38 733 706 160.1
B 7 0 45802 281.61 733 706 160.1
B 7 252 28152 171.39 733 706 160.1
C 12 252 174773 870.98 722 716 199.8
C 5 96 105069 522.18 722 716 199.8
C 6 223 79057 392.02 722 716 199.8
D 11 129 1218408 6016.73 713 680 202.4
D 8 245 248732 1225.61 713 680 202.4
D 3 12 145320 714.66 713 680 202.4

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