ASTROSAT CZTI

Data Quality Report

Orbit 58691

Creation date: 2026-08-03T14:38:43.139004
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_004T06_9000006594_58691cztM0_level2.fits modeM0/AS1A14_004T06_9000006594_58691cztM0_level2_quad_clean.evt
Size (bytes)691,079,040105,552,000
Size659.1 MB 100.7 MB
Events in quadrant A3,441,526750,683
Events in quadrant B7,413,541668,365
Events in quadrant C4,294,757716,917
Events in quadrant D9,833,121523,118

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01607977
B02749786
C018539122
D034775169

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7716140.181441%
B7716142018.403318%
C77171391.801218%
D7716199525.855365%

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 7716 7716 10 10 0.13% 0.13%
B 7716 7716 968 968 12.55% 12.55%
C 7717 7717 91 91 1.18% 1.18%
D 7716 7716 1581 1581 20.49% 20.49%

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 10 251 79545 379.35 843 822 207.5
A 3 14 47265 223.8 843 822 207.5
A 10 17 39496 186.36 843 822 207.5
B 2 249 2940815 17682.63 780 751 166.3
B 15 32 949096 5703.7 780 751 166.3
B 8 128 150147 898.52 780 751 166.3
C 13 3 527471 2321.51 828 819 226.9
C 12 252 114745 502.19 828 819 226.9
C 6 223 108965 476.71 828 819 226.9
D 11 129 5113394 24576.5 724 688 208.0
D 8 240 762280 3660.93 724 688 208.0
D 7 222 338756 1625.07 724 688 208.0

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