ASTROSAT CZTI

Data Quality Report

Orbit 55211

Creation date: 2025-12-12T01:26:12.094045
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_022T16_9000006532_55211cztM0_level2.fits modeM0/AS1A14_022T16_9000006532_55211cztM0_level2_quad_clean.evt
Size (bytes)467,403,84099,745,920
Size445.8 MB 95.1 MB
Events in quadrant A3,217,790669,880
Events in quadrant B3,284,786704,985
Events in quadrant C5,015,535594,682
Events in quadrant D5,252,215574,792

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146202
B0148332
C0198912
D0204462

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6837801.170104%
B68381211.769523%
C68385698.321147%
D68384396.420006%

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 8747 6839 16 16 0.18% 0.23%
B 8748 6839 37 37 0.42% 0.54%
C 8748 6840 449 449 5.13% 6.56%
D 8747 6838 365 365 4.17% 5.34%

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 12 115 103690 555.89 750 732 185.2
A 0 8 72960 389.97 750 732 185.2
A 11 191 39528 209.47 750 732 185.2
B 2 249 136635 854.74 738 710 159.0
B 10 247 84946 529.7 738 710 159.0
B 5 172 62813 390.52 738 710 159.0
C 12 254 1164330 5943.53 707 699 195.8
C 14 254 561180 2862.79 707 699 195.8
C 13 3 358862 1829.4 707 699 195.8
D 11 129 1016778 5047.79 712 682 201.3
D 2 249 932112 4627.19 712 682 201.3
D 3 12 124811 616.65 712 682 201.3

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