ASTROSAT CZTI

Data Quality Report

Orbit 50294

Creation date: 2025-01-15T01:19:29.449742
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_003T01_9000006442_50294cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50294cztM0_level2_quad_clean.evt
Size (bytes)1,508,552,64047,108,160
Size1.4 GB 44.9 MB
Events in quadrant A17,131,924139,319
Events in quadrant B5,093,035708,916
Events in quadrant C16,211,58835,526
Events in quadrant D16,852,24141,230

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0556530
B0200785
C0530460
D0549070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7196582480.933852%
B71953965.503822%
C7195681994.774149%
D7195676794.051425%

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 7196 7196 5388 5388 74.87% 74.87%
B 7195 7195 230 230 3.20% 3.20%
C 7194 7192 5203 5203 72.32% 72.34%
D 7194 7192 5956 5956 82.79% 82.81%

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 6 250 12684615 142996.76 350 342 88.7
A 0 98 1679082 18925.36 350 342 88.7
A 12 250 517319 5828.17 350 342 88.7
B 4 206 1096913 6856.08 755 731 159.9
B 1 238 297081 1853.52 755 731 159.9
B 0 172 253929 1583.63 755 731 159.9
C 15 197 9076593 165161.38 176 173 55.0
C 4 111 3094973 56315.31 176 173 55.0
C 15 127 1526172 27768.23 176 173 55.0
D 7 61 13356577 199947.71 225 215 66.8
D 15 108 575028 8605.08 225 215 66.8
D 2 37 319247 4775.98 225 215 66.8

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