ASTROSAT CZTI

Data Quality Report

Orbit 52656

Creation date: 2025-06-23T18:07:27.730655
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_011T07_9000006480_52656cztM0_level2.fits modeM0/AS1C09_011T07_9000006480_52656cztM0_level2_quad_clean.evt
Size (bytes)962,772,48067,196,160
Size918.2 MB 64.1 MB
Events in quadrant A3,390,884603,798
Events in quadrant B12,103,611303,903
Events in quadrant C12,034,158231,350
Events in quadrant D7,634,500464,240

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142761
B0402532
C0400081
D0269871

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61621412.288218%
B6162361258.617332%
C6162391263.485881%
D6162120619.571568%

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 7317 6163 95 95 1.30% 1.54%
B 7316 6161 3246 3246 44.37% 52.69%
C 7316 6161 3651 3651 49.90% 59.26%
D 7317 6163 1171 1171 16.00% 19.00%

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 8 43 258948 1596.99 648 633 161.8
A 3 14 220059 1356.56 648 633 161.8
A 5 246 75052 460.08 648 633 161.8
B 10 128 6780832 68689.97 469 455 98.7
B 12 32 2145884 21734.7 469 455 98.7
B 10 254 742089 7513.27 469 455 98.7
C 15 233 5741485 48630.86 421 416 118.1
C 15 158 3257629 27590.87 421 416 118.1
C 2 12 284533 2406.67 421 416 118.1
D 8 176 2572816 15421.38 578 553 166.8
D 12 3 874609 5240.19 578 553 166.8
D 1 7 541231 3241.5 578 553 166.8

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